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1. Annulation-Triggered Denitrogenative Transformations of 2-(5-Iodo-1,2,3-triazolyl)benzoic Acids

Author:
Vladislav A. Voloshkin; Yury N. Kotovshchikov; Gennadij V. Latyshev; Nikolay V. Lukashev; Irina P. Beletskaya
Source:
Journal of organic chemistry 2022 v.87 no.11 pp. 7064-7075
ISSN:
1520-6904
Subject:
benzoxazinoids; cyclization reactions; diazo compounds; organic chemistry
Abstract:
... The ability of [1,2,3]triazolobenzoxazinones to act as a source of “hidden” diazo group was discovered. These diazo precursors can be easily prepared by the intramolecular cyclization of 2-(5-iodo-1,2,3-triazolyl)benzoic acids. The Cu-catalyzed capture of the hidden diazo group allows for further functionalization through the denitrogenative pathway. The transformations proceed via the formation o ...
DOI:
10.1021/acs.joc.2c00235

2. Benzoxazinoids in roots and shoots of cereal rye (Secale cereale) and their fates in soil after cover crop termination

Author:
Clifford P. Rice; Briana A. Otte; Matthew Kramer; Harry H. Schomberg; Steven B. Mirsky; Katherine L. Tully
Source:
Chemoecology 2022 v.32 no.3 pp. 117-128
ISSN:
0937-7409
Subject:
Secale cereale; agroecosystems; allelochemicals; benzoxazinoids; cover crop termination; no-tillage; rhizosphere; rye; soil; weed control
Abstract:
... Cover crops provide many agroecosystem services, including weed suppression, which is partially exerted through release of allelopathic benzoxazinoid (BX) compounds. This research (1) characterizes changes in concentrations of BX compounds in shoots, roots, and soil at three growth stages (GS) of cereal rye (Secale cereale L.), and (2) their degradation in soil over time following termination. Con ...
Datasets:
Data from: Benzoxazinoids in roots and shoots of cereal rye (Secale cereale) and their fates in soil after cover crop termination
DOI:
10.1007/s00049-022-00371-x

3. Benzoxazinoids in wheat allelopathy – From discovery to application for sustainable weed management

Author:
M. Iftikhar Hussain; Fabrizio Araniti; Margot Schulz; Scott Baerson; Yedra Vieites-Álvarez; Leonidas Rempelos; Paul Bilsborrow; Nuria Chinchilla; Francisco A. Macías; Leslie A. Weston; Manuel J. Reigosa; Adela M. Sánchez-Moreiras
Source:
Environmental and experimental botany 2022 v.202 pp. 104997
ISSN:
0098-8472
Subject:
Avena fatua; Bromus japonicus; Chenopodium album; Lolium rigidum; Portulaca oleracea; Triticum aestivum; agroecosystems; allelochemicals; allelopathy; benzoxazinoids; biodiversity; biosynthesis; cultivars; flavonoids; fungi; genotype; germination; glucosylation; hydroxylation; metabolites; polymerization; proteome; seedling growth; transcription (genetics); weed control; weeds; wheat
Abstract:
... Allelopathic activity of wheat (Triticum aestivum L.) has previously been associated with the production of phenolic acids and flavonoids (PAF), benzoxazinones (BXZs) and phenoxazinones (PXZs). The biosynthesis of BXZs is closely regulated during cereal growth, with accumulation highest in young tissues with variation associated with genotype and environmental conditions. This review is focused on ...
Handle:
10113/7837323
DOI:
10.1016/j.envexpbot.2022.104997

4. Gold(I)-Catalyzed Heteroannulation of Salicylic Amides with Alkynes: Synthesis of 1,3-Benzoxazin-4-one Derivatives

Author:
Masahiro Abe; Megumu Kawamoto; Mayu Inoue; Tetsutaro Kimachi; Kiyofumi Inamoto
Source:
Organic letters 2022 v.24 no.31 pp. 5684-5687
ISSN:
1523-7052
Subject:
alkynes; amides; benzoxazinoids; carbon; gold
Abstract:
... Gold(I)-catalyzed heteroannulation affords the efficient and straightforward construction of heterocyclic compounds. Herein, we developed a gold(I)-catalyzed heteroannulation of salicylic amides with alkynes producing a broad range of 1,3-benzoxazin-4-ones. The utility of this protocol was highlighted by synthesizing variously substituted benzoxazinones containing quaternary carbon centers, showin ...
DOI:
10.1021/acs.orglett.2c02066

5. Integrated LC–MS and GC–MS-Based Metabolomics Reveal the Effects of Plant Competition on the Rye Metabolome

Author:
Hossein Hazrati; Per Kudsk; Ling Ding; Henriette Uthe; Inge S. Fomsgaard
Source:
Journal of agricultural and food chemistry 2022 v.70 no.9 pp. 3056-3066
ISSN:
1520-5118
Subject:
4-hydroxybenzoic acid; Pisum sativum; Secale cereale; Trifolium alexandrinum; Vicia villosa; benzoxazinoids; coculture; elicitors; food chemistry; glycosides; liquid chromatography; metabolome; metabolomics; multivariate analysis; peas; plant competition; reactive oxygen species; rye; tandem mass spectrometry; uracil
Abstract:
... Plants compete with their neighbors about the limited resources available to them. Plants under induced stress resulting from competition may alter their metabolome to increase their resilience or enhance their defense mechanisms. In the present study, rye (Secale cereale) plants were cocultivated with different densities (3, 12, and 18 plants per pot) of Austrian pea (Pisum sativum subsp. arvense ...
DOI:
10.1021/acs.jafc.1c06306

6. Integrated transcriptome and metabolite profiling highlights the role of benzoxazinoids in wheat resistance against Fusarium crown rot

Author:
Shuonan Duan; Jingjing Jin; Yutian Gao; Changlin Jin; Junyi Mu; Wenchao Zhen; Qixin Sun; Chaojie Xie; Jun Ma
Source:
crop journal 2022 v.10 no.2 pp. 407-417
ISSN:
2214-5141
Subject:
Fusarium pseudograminearum; arabitol; benzoxazinoids; betaine; crown rot; cultivars; disease resistance; dodecanoic acid; flavonoids; fungal growth; gene expression; genetic improvement; jasmonic acid; metabolites; pathogens; phenolic acids; photosynthesis; proline; seedlings; sequence analysis; transcriptome; wheat; China
Abstract:
... Fusarium crown rot (FCR), caused by Fusarium spp., is a chronic and severe plant disease worldwide. In the last years, the incidence and severity of FCR in China has increased to the point that it is now considered a threat to local wheat crops. In this study, for the first time, the metabolites and transcripts responsive to FCR infection in the partial resistant wheat cultivar 04 Zhong 36 (04z36) ...
DOI:
10.1016/j.cj.2021.06.004

7. Regenerable Dihydrophenanthridine via Borane-Catalyzed Hydrogenation for the Asymmetric Transfer Hydrogenation of Benzoxazinones

Author:
Bochao Gao; Wei Meng; Xiangqing Feng; Haifeng Du
Source:
Organic letters 2022 v.24 no.22 pp. 3955-3959
ISSN:
1523-7052
Subject:
benzoxazinoids; boranes; enantioselectivity; hydrogen; hydrogenation
Abstract:
... The highly enantioselective transfer hydrogenation of benzoxazinones with chiral phosphoric acids under H₂ was successfully achieved, where boranes promoted the hydrogenation of phenanthridine for the regeneration of dihydrophenanthridine as the hydrogen donor. A variety of dihydrobenzoxazinones were obtained in high yields with up to 99% ee. The current work provides a promising solution to unrea ...
DOI:
10.1021/acs.orglett.2c01314

8. Transcriptional response of a target plant to benzoxazinoid and diterpene allelochemicals highlights commonalities in detoxification

Author:
Eva Knoch; Judit Kovács; Sebastian Deiber; Keisuke Tomita; Reshi Shanmuganathan; Núria Serra Serra; Kazunori Okada; Claude Becker; Niklas Schandry
Source:
BMC plant biology 2022 v.22 no.1 pp. 402
ISSN:
1471-2229
Subject:
Arabidopsis thaliana; Poaceae; allelochemicals; benzoxazinoids; crops; diterpenoids; herbicide resistance; herbicides; metabolites; phytotoxicity; plant biology; transcription (genetics); transcriptomics
Abstract:
... BACKGROUND: Plants growing in proximity to other plants are exposed to a variety of metabolites that these neighbors release into the environment. Some species produce allelochemicals to inhibit growth of neighboring plants, which in turn have evolved ways to detoxify these compounds. RESULTS: In order to understand how the allelochemical-receiving target plants respond to chemically diverse compo ...
DOI:
10.1186/s12870-022-03780-w

9. An approach for the synthesis of 2-aryl-3-sulfonyl substituted quinolines through an electrochemical cascade annulation pathway

Author:
Qiang Ma; Ming Li; Zhuo Chen; Shao-Fei Ni; James S. Wright; Li-Rong Wen; Lin-Bao Zhang
Source:
Green chemistry 2022 v.24 no.11 pp. 4425-4431
ISSN:
1463-9270
Subject:
ambient temperature; benzoxazinoids; electrochemistry; electrosynthesis; green chemistry; hydrazides; quinolines; regioselectivity
Abstract:
... An electrochemical protocol for the synthesis of 2,3-disubstituted quinolines by reacting benzoxazinones with arylsulfonyl hydrazides was established under simple and mild conditions (room temperature and an undivided cell). The methodology does not require noble catalysts or external oxidants, providing a green and mild pathway for de novo synthesis of functional quinolines with excellent regiose ...
DOI:
10.1039/d2gc00151a

10. Concerted cis and trans effects underpin heightened defense gene expression in multi‐herbivore‐resistant maize lines

Author:
Meiyuan Ji; Huyen Bui; Ricardo A. Ramirez; Richard M. Clark
Source:
plant journal 2022 v.111 no.2 pp. 508-528
ISSN:
0960-7412
Subject:
Ostrinia nubilalis; Tetranychus urticae; benzoxazinoids; biosynthesis; corn; death; gene expression; herbivores; jasmonic acid; leaves; pests
Abstract:
... In maize (Zea mays ssp. mays), agriculturally damaging herbivores include lepidopteran insects, such as the European corn borer (Ostrinia nubilalis), and distantly related arthropods, like the two‐spotted spider mite (Tetranychus urticae). A small number of maize lines, including B96 and B75, are highly resistant to both herbivores, and B96 is also resistant to thrips. Using T. urticae as a repres ...
DOI:
10.1111/tpj.15812

11. Engineering of benzoxazinoid biosynthesis in Arabidopsis thaliana: Metabolic and physiological challenges

Author:
Aleksej Abramov; Thomas Hoffmann; Timo D. Stark; Linlin Zheng; Stefan Lenk; Richard Hammerl; Tobias Lanzl; Corinna Dawid; Chris-Carolin Schön; Wilfried Schwab; Alfons Gierl; Monika Frey
Source:
Phytochemistry 2021 v.192 pp. 112947
ISSN:
0031-9422
Subject:
Arabidopsis thaliana; benzoxazinoids; biosynthesis; chemical defenses; corn; evolution; genetically modified organisms; glucosides; glycosylation; hydroxylation; metabolites; phytotoxicity; plant biochemistry; plant morphology; rye; salicylic acid; wheat
Abstract:
... Plant specialised metabolites constitute a layer of chemical defence. Classes of the defence compounds are often restricted to a certain taxon of plants, e.g. benzoxazinoids (BX) are characteristically detected in grasses. BXs confer wide-range defence by controlling herbivores and microbial pathogens and are allelopathic compounds. In the crops maize, wheat and rye high concentrations of BXs are ...
DOI:
10.1016/j.phytochem.2021.112947

12. First Report of Benzoxazinoid Compounds in Woolly Cupgrass (Eriochloa villosa Thunb. Kunth), an Invasive Plant

Author:
Peter Makleit; Arnold Szilágyi; Szilvia Veres
Source:
Agronomy 2022 v.12 no.3 pp. -
ISSN:
2073-4395
Subject:
Eriochloa villosa; agronomy; annual weeds; benzoxazinoids; germination; invasive species; East Asia; Europe; North America
Abstract:
... Woolly cupgrass (Eriochloa villosa Thunb. Knuth) is a common weed which is native to East Asia. It also was introduced into North America and Europe. The problems related to controlling this annual weed are due to its germination characteristics, low susceptibility to certain herbicides and considerable competitiveness against other plant species. Several genera of the Panicoideae subfamily contai ...
DOI:
10.3390/agronomy12030700

13. Horizontal transfer and evolution of the biosynthetic gene cluster for benzoxazinoids in plants

Author:
Dongya Wu; Bowen Jiang; Chu-Yu Ye; Michael P. Timko; Longjiang Fan
Source:
Plant communications 2022 v.3 no.3 pp. 100320
ISSN:
2590-3462
Subject:
Echinochloa; ancestry; benzoxazinoids; biosynthesis; chromosome translocation; corn; evolution; gene duplication; grasses; multigene family; secondary metabolites
Abstract:
... Benzoxazinoids are a class of protective and allelopathic plant secondary metabolites that have been identified in multiple grass species and are encoded by the Bx biosynthetic gene cluster (BGC) in maize. Data mining of 41 high-quality grass genomes identified complete Bx clusters (containing genes Bx1–Bx5 and Bx8) in three genera (Zea, Echinochloa, and Dichanthelium) of Panicoideae and partial c ...
DOI:
10.1016/j.xplc.2022.100320

14. Indole‐3‐glycerolphosphate synthase, a branchpoint for the biosynthesis of tryptophan, indole, and benzoxazinoids in maize

Author:
Annett Richter; Adrian F. Powell; Mahdieh Mirzaei; Lucy J. Wang; Navid Movahed; Julia K. Miller; Miguel A. Piñeros; Georg Jander
Source:
plant journal 2021 v.106 no.1 pp. 245-257
ISSN:
0960-7412
Subject:
Magnoliopsida; Spodoptera exigua; Zea mays; benzoxazinoids; biosynthesis; chloroplasts; corn; fluorescence; genome; indoles; insects; metabolites; mutants; phylogeny; transposons; tryptophan; tryptophan synthase; yellow fluorescent protein
Abstract:
... The maize (Zea mays) genome encodes three indole‐3‐glycerolphosphate synthase enzymes (IGPS1, 2, and 3) catalyzing the conversion of 1‐(2‐carboxyphenylamino)‐l‐deoxyribulose‐5‐phosphate to indole‐3‐glycerolphosphate. Three further maize enzymes (BX1, benzoxazinoneless 1; TSA, tryptophan synthase alpha subunit; and IGL, indole glycerolphosphate lyase) convert indole‐3‐glycerolphosphate to indole, w ...
DOI:
10.1111/tpj.15163

15. Maize specialized metabolome networks reveal organ-preferential mixed glycosides

Author:
Sandrien Desmet; Yvan Saeys; Kevin Verstaen; Rebecca Dauwe; Hoon Kim; Claudiu Niculaes; Atsushi Fukushima; Geert Goeminne; Ruben Vanholme; John Ralph; Wout Boerjan; Kris Morreel
Source:
Computational and Structural Biotechnology Journal 2021 v.19 pp. 1127-1144
ISSN:
2001-0370
Subject:
benzoxazinoids; biochemical pathways; biotechnology; corn; databases; flavonoids; glycosides; mass spectrometry; metabolome; metadata; phenylpropanoids; reversed-phase liquid chromatography
Abstract:
... Despite the scientific and economic importance of maize, little is known about its specialized metabolism. Here, five maize organs were profiled using different reversed-phase liquid chromatography-mass spectrometry methods. The resulting spectral metadata, combined with candidate substrate-product pair (CSPP) networks, allowed the structural characterization of 427 of the 5,420 profiled compounds ...
DOI:
10.1016/j.csbj.2021.01.004

16. One-Pot, Three-Step Synthesis of Benzoxazinones via Use of the Bpin Group as a Masked Nucleophile

Author:
Egor M. Larin; Alexa Torelli; Joachim Loup; Mark Lautens
Source:
Organic letters 2021 v.23 no.7 pp. 2720-2725
ISSN:
1523-7052
Subject:
Lewis bases; alcohols; benzoxazinoids; carbamates; enantioselectivity; oxidation
Abstract:
... The utilization of the Bpin group as a pronucleophile to facilitate the assembly of cyclic carbamates has been achieved. This one-pot process involves an initial copper-catalyzed borylation, a subsequent C–B bond oxidation to generate the reactive alcohol intermediate, and a cyclization. We report the use of this efficient, scalable, and simple method toward the synthesis of a wide range of benzox ...
DOI:
10.1021/acs.orglett.1c00623

17. Seed inoculations with entomopathogenic fungi affect aphid populations coinciding with modulation of plant secondary metabolite profiles across plant families

Author:
Shumaila Rasool; Nanna H. Vidkjær; Kourosh Hooshmand; Birgit Jensen; Inge S. Fomsgaard; Nicolai V. Meyling
Source:
new phytologist 2021 v.229 no.3 pp. 1715-1727
ISSN:
0028-646X
Subject:
Aphis fabae; Bassiana; Beauveria bassiana; Metarhizium brunneum; Rhopalosiphum padi; beans; benzoxazinoids; endophytes; entomopathogenic fungi; flavonoids; leaves; lifestyle; pest management; population; population growth; secondary metabolites; seed inoculation; tritrophic interactions; wheat
Abstract:
... Entomopathogenic fungi (EPF) can display a plant‐associated lifestyle as endophytes. Seed application of EPF can affect insect herbivory above ground, but the mechanisms behind this are not documented. Here we applied three EPF isolates, Beauveria bassiana, Metarhizium brunneum and M. robertsii, as seed inoculation of wheat and bean, and evaluated the effects on population growth of aphids, Rhopal ...
DOI:
10.1111/nph.16979

18. Soil composition and plant genotype determine benzoxazinoid‐mediated plant–soil feedbacks in cereals

Author:
Selma Cadot; Valentin Gfeller; Lingfei Hu; Nikhil Singh; Andrea Sánchez‐Vallet; Gaétan Glauser; Daniel Croll; Matthias Erb; Marcel G. A. van der Heijden; Klaus Schlaeppi
Source:
Plant, cell and environment 2021 v.44 no.12 pp. 3502-3514
ISSN:
0140-7791
Subject:
benzoxazinoids; biomass; corn; environment; genotype; grassland soils; insect resistance; pathogens; secondary metabolites; secretion; soil composition; soil microorganisms; wheat
Abstract:
... Plant–soil feedbacks refer to effects on plants that are mediated by soil modifications caused by the previous plant generation. Maize conditions the surrounding soil by secretion of root exudates including benzoxazinoids (BXs), a class of bioactive secondary metabolites. Previous work found that a BX‐conditioned soil microbiota enhances insect resistance while reducing biomass in the next generat ...
DOI:
10.1111/pce.14184

19. Stepwise mass spectrometry‐based approach for confirming the presence of benzoxazinoids in herbs and vegetables

Author:
Bina Bhattarai; Stine K. Steffensen; Per L. Gregersen; Hanne L. Kristensen; Inge S. Fomsgaard
Source:
Phytochemical analysis 2021 v.32 no.3 pp. 283-297
ISSN:
0958-0344
Subject:
Acanthus mollis; Consolida; Lamium galeobdolon; Poaceae; benzoxazinoids; liquid chromatography; mass spectrometry; phytochemicals; solvents; therapeutics
Abstract:
... INTRODUCTION: Benzoxazinoids (BXs) are plant phytochemicals that have both defensive properties in plants and therapeutic effects in humans. The presence of BXs has been largely studied in the Poaceae family (monocots). To study the presence or absence of BXs in dicotyledons and monocotyledons outside the Poaceae family, parts of 24 plant species at several growth stages were selected for analysis ...
DOI:
10.1002/pca.2973

20. Synthesis of Chiral 2-Substituted 1,4-Benzoxazin-3-ones via Iridium-Catalyzed Enantioselective Hydrogenation of Benzoxazinones

Author:
Yu Nie; Jing Li; Jun Yan; Qianjia Yuan; Wanbin Zhang
Source:
Organic letters 2021 v.23 no.14 pp. 5373-5377
ISSN:
1523-7052
Subject:
benzoxazinoids; catalysts; enantioselectivity; hydrogenation; ligands
Abstract:
... An efficient iridium-catalyzed enantioselective hydrogenation of 2-alkylidene 1,4-benzoxazin-3-ones using our developed iPr-BiphPHOX as a ligand is reported. This method showed good functional group compatibility and delivered the corresponding reduced products in excellent yields (up to 99%) with excellent enantioselectivities (up to 99% ee). The reaction proceeded very well on a gram scale with ...
DOI:
10.1021/acs.orglett.1c01701

21. Unveiling the spatial distribution of aflatoxin B1 and plant defense metabolites in maize using AP‐SMALDI mass spectrometry imaging

Author:
Laura Righetti; Dhaka Ram Bhandari; Enrico Rolli; Sara Tortorella; Renato Bruni; Chiara Dall’Asta; Bernhard Spengler
Source:
plant journal 2021 v.106 no.1 pp. 185-199
ISSN:
0960-7412
Subject:
Zea mays; aflatoxin B1; aflatoxin M2; anthocyanins; antioxidants; atmospheric pressure; benzoxazinoids; biosynthesis; biotransformation; chlorophyll; corn; desorption; fungi; metabolomics; phenylpropanoids; plant hormones; secondary metabolites; xenobiotics
Abstract:
... In order to cope with the presence of unfavorable compounds, plants can biotransform xenobiotics, translocate both parent compounds and metabolites, and perform compartmentation and segregation at the cellular or tissue level. Such a scenario also applies to mycotoxins, fungal secondary metabolites with a pre‐eminent role in plant infection. In this work, we aimed to describe the effect of the int ...
DOI:
10.1111/tpj.15158

22. Weed pressure determines the chemical profile of wheat (Triticum aestivum L.) and its allelochemicals potential

Author:
M Iftikhar Hussain; Yedra Vieites‐Álvarez; Paz Otero; Miguel A Prieto; Jesus Simal‐Gandara; Manuel J Reigosa; Adela M Sánchez‐Moreiras
Source:
Pest management science 2022 v.78 no.4 pp. 1605-1619
ISSN:
1526-498X
Subject:
Lolium rigidum; Portulaca oleracea; Triticum aestivum; agar; allelochemicals; allelopathy; benzoxazinoids; biomass; coculture; cultivars; ecotoxicology; exudation; flavonoids; germination; photosynthesis; plant density; polyphenols; rhizosphere; seedling growth; weed control; weeds; wheat
Abstract:
... BACKGROUND: Common purslane (Portulaca oleracea) and annual ryegrass (Lolium rigidum) are important infesting weeds of field crops. Herbicides are mostly used for weed suppression, while their environmental toxicity and resistance in weeds against them demand considering alternative options, such as the use of allelopathic crops for weed management. Wheat is an important allelopathic crop and pres ...
DOI:
10.1002/ps.6779

23. ZmMPK6 and ethylene signalling negatively regulate the accumulation of anti‐insect metabolites DIMBOA and DIMBOA‐Glc in maize inbred line A188

Author:
Cuiping Zhang; Jing Li; Sen Li; Canrong Ma; Hui Liu; Lei Wang; Jinfeng Qi; Jianqiang Wu
Source:
new phytologist 2021 v.229 no.4 pp. 2273-2287
ISSN:
0028-646X
Subject:
benzoxazinoids; bioassays; biosynthesis; corn; dimboa; ethylene; ethylene production; genes; herbivores; information; insect resistance; jasmonic acid; metabolites; reverse genetics; salicylic acid; transcription factors; transcriptomics
Abstract:
... 2,4‐Dihydroxy‐7‐methoxy‐1,4‐benzoxazin‐3‐one (DIMBOA) and DIMBOA‐glucoside (DIMBOA‐Glc) are anti‐insect benzoxazinoids in maize, yet very little information is known about how they are regulated. Reverse genetics, kinase activity analysis, phytohormone and DIMBOA/DIMBOA‐Glc quantification, bioassays and transcriptome analysis were employed to study the function of ZmMPK6, a mitogen‐activated prote ...
DOI:
10.1111/nph.16974

24. A cooperative Pd/Co catalysis system for the asymmetric (4+2) cycloaddition of vinyl benzoxazinones with N-acylpyrazoles

Author:
Wei Xiong; Xuan Jiang; Mao-Mao Zhang; Wen-Jing Xiao; Liang-Qiu Lu
Source:
Chemical communications 2021 v.57 no.99 pp. 13566-13569
ISSN:
1364-548X
Subject:
benzoxazinoids; catalysts; catalytic activity; cycloaddition reactions
Abstract:
... Transition metal-catalyzed cycloaddition has been established as a powerful tool for heterocycle synthesis. Despite impressive advances, the exploitation of new catalysis strategies and systems is still highly significant to enrich the heterocycle family. Herein, we disclosed a cooperative catalysis system merging an achiral Pd catalyst and a chiral Co catalyst for the asymmetric [4+2] cycloadditi ...
DOI:
10.1039/d1cc05952a

25. The wheat dioxygenase BX6 is involved in the formation of benzoxazinoids in planta and contributes to plant defense against insect herbivores

Author:
Reut Shavit; Zhaniya S. Batyrshina; Beery Yaakov; Matilde Florean; Tobias G. Köllner; Vered Tzin
Source:
Plant science 2022 v.316 pp. 111171
ISSN:
0168-9452
Subject:
Tetranychus urticae; Triticum turgidum subsp. dicoccoides; benzoxazinoids; durum wheat; genes; hexaploidy; metabolites; phylogeny; tetraploidy; transcriptome
Abstract:
... Benzoxazinoids are plant specialized metabolites with defense properties, highly abundant in wheat (Triticum), one of the world’s most important crops. The goal of our study was to characterize dioxygenase BX6 genes in tetraploid and hexaploid wheat genotypes and to elucidate their effects on defense against herbivores. Phylogenetic analysis revealed four BX6 genes in the hexaploid wheat T. aestiv ...
DOI:
10.1016/j.plantsci.2021.111171

26. Allelopathic Plants: Models for Studying Plant–Interkingdom Interactions

Author:
Niklas Schandry; Claude Becker
Source:
Trends in plant science 2020 v.25 no.2 pp. 176-185
ISSN:
1360-1385
Subject:
allelochemicals; allelopathy; bacteria; benzoxazinoids; fungi; insects; models; plant health; secondary metabolites
Abstract:
... Allelopathy is a biochemical interaction between plants in which a donor plant releases secondary metabolites, allelochemicals, that are detrimental to the growth of its neighbours. Traditionally considered as bilateral interactions between two plants, allelopathy has recently emerged as a cross-kingdom process that can influence and be modulated by the other organisms in the plant’s environment. ...
DOI:
10.1016/j.tplants.2019.11.004

27. Benzoxazinoid and alkylresorcinol content, and their antioxidant potential, in a grain of spring and winter wheat cultivated under different production systems

Author:
Iwona Kowalska; Dariusz Jędrejek
Source:
Journal of cereal science 2020 v.95 pp. 103063
ISSN:
0733-5210
Subject:
Triticum aestivum; alkylresorcinols; antioxidant activity; benzoxazinoids; cultivars; free radicals; health promotion; phytochemicals; spring; value added; winter wheat; Poland
Abstract:
... The health-promoting properties of the grains of common wheat (Triticum aestivum L.) are associated with the presence of unique phytochemicals. This study determines the profile of alkylresorcinols (ARs) and benzoxazinoids (BXs) in T. aestivum spring and winter cultivars grown in Poland under the two different production systems: conventional and organic. Wheat grain extracts were subjected to qua ...
DOI:
10.1016/j.jcs.2020.103063

28. Benzoxazinoids Biosynthesis in Rye (Secale cereale L.) Is Affected by Low Temperature

Author:
Beata Bakera; Magdalena Święcicka; Anna Stochmal; Mariusz Kowalczyk; Leszek Bolibok; Monika Rakoczy-Trojanowska
Source:
Agronomy 2020 v.10 no.9 pp. -
ISSN:
2073-4395
Subject:
Secale cereale; benzoxazinoids; biosynthesis; cultivars; dimboa; gene expression; genes; hydroxamic acids; inbred lines; metabolites; plant breeding; rye; seed germination; temperature; vernalization; winter
Abstract:
... Benzoxazinoids (BXs) are specialized metabolites with protective properties that are synthesized predominantly by Poaceae species, including rye (Secale cereale). Among factors known to influence BXs production, prolonged low temperature has not been studied previously. In this study, the influence of cultivation at 4 °C, which is essential for vernalization, on the concentration of BXs (HBOA, DIB ...
DOI:
10.3390/agronomy10091260

29. Biomimetic asymmetric reduction of benzoxazinones and quinoxalinones using ureas as transfer catalysts

Author:
Zi-Biao Zhao; Xiang Li; Mu-Wang Chen; Zongbao K. Zhao; Yong-Gui Zhou
Source:
Chemical communications 2020 v.56 no.53 pp. 7309-7312
ISSN:
1364-548X
Subject:
NAD (coenzyme); NADP (coenzyme); benzoxazinoids; biomimetics; catalysts; chemical reactions; enantioselectivity; hydrogen bonding; models
Abstract:
... Using ureas as transfer catalysts through hydrogen bonding activation, biomimetic asymmetric reduction of benzoxazinones and quinoxalinones with chiral and regenerable NAD(P)H models was described, giving chiral dihydrobenzoxazinones and dihydroquinoxalinones with high yields and excellent enantioselectivities. A key dihydroquinoxalinone intermediate of a BRD4 inhibitor was synthesized using biomi ...
DOI:
10.1039/d0cc03091k

30. Cocultivating rye with berseem clover affects benzoxazinoid production and expression of related genes

Author:
Monika Rakoczy‐Trojanowska; Magdalena Święcicka; Beata Bakera; Mariusz Kowalczyk; Anna Stochmal; Leszek Bolibok
Source:
Crop science 2020 v.60 no.6 pp. 3228-3246
ISSN:
0011-183X
Subject:
Secale cereale; Trifolium alexandrinum; allelopathy; benzoxazinoids; coculture; dimboa; gene expression; genes; genotype; germination; rye; secondary metabolites; soil; stress tolerance
Abstract:
... Benzoxazinoids (BXs) are secondary metabolites synthesized mainly by gramineous plants, including rye (Secale cereale L.), that play an important role in stress resistance and allelopathy. In the present work, the influence of cocultivation of rye with berseem clover (Trifolium alexandrinum L.) on the expression of BX synthesis‐regulating genes (ScBx1–ScBx5, ScIgl, and ScGT) and the content of six ...
DOI:
10.1002/csc2.20263

31. Electrochemical Rearrangement of 3-Hydroxyoxindoles into Benzoxazinones

Author:
Marie Vayer; Miryam Pastor; Christiane Kofink; Nuno Maulide
Source:
Organic letters 2021 v.24 no.1 pp. 27-32
ISSN:
1523-7052
Subject:
benzoxazinoids; electrochemistry; peroxides
Abstract:
... We report an unexpected rearrangement of 3-hydroxyoxindoles into benzoxazinones using electrochemistry. Our reaction employs mild and environmentally friendly conditions, and the benzoxazinone products are obtained in moderate to excellent yields. Mechanistic experiments suggest that a peroxide intermediate is likely involved. ...
DOI:
10.1021/acs.orglett.1c03569

32. Improving weed control in sustainable agro-ecosystems: Role of cultivar and termination timing of rye cover crop

Author:
Roberta Boselli; Nico Anders; Andrea Fiorini; Cristina Ganimede; Nadia Faccini; Adriano Marocco; Margot Schulz; Vincenzo Tabaglio
Source:
Italian journal of agronomy 2021 v.16 no.4 pp. 1807
ISSN:
1125-4718
Subject:
Abutilon theophrasti; Amaranthus retroflexus; Chenopodium album; Portulaca oleracea; Secale cereale; agroecosystems; agronomy; allelochemicals; benzoxazinoids; biomass production; cover crops; cultivars; field experimentation; germination; grasses; pollution; rye; seedling growth; summer; weed control
Abstract:
... Alternative strategies to control weeds are required at the field level to reduce herbicides and derived pollution. As cover crop, rye (Secale cereale L.) is adopted mainly because of its allelopathic weed control, which takes place through a strong inhibition of germination and seedling growth in several types of grass and broad-leaved weeds. The present study consisted of: i) a field trial, focu ...
DOI:
10.4081/ija.2021.1807

33. Isolation and structural analysis of the Bx6 and Bx7 genes controlling the biosynthesis of benzoxazinoids in rye (Secale cereale L.)

Author:
Beata Bakera; Monika Rakoczy-Trojanowska
Source:
Acta physiologiae plantarum 2020 v.42 no.4 pp. 56
ISSN:
0137-5881
Subject:
Magnoliopsida; Secale cereale; amino acid sequences; bacterial artificial chromosomes; benzoxazinoids; biosynthesis; clones; genes; genetic background; heavy metals; pests; rye; salinity; salt stress; secondary metabolites; transferases
Abstract:
... Benzoxazinoids (BXs) are plant secondary metabolites, first discovered in the 1950s, which are synthesized in many monocotyledonous species from the Poaceae family and in several dicotyledonous plants. They constitute a significant element of the plant’s defence mechanism against both biotic (pests and diseases) and abiotic (elevated salinity, heavy metals) stresses. The aim of this research was t ...
DOI:
10.1007/s11738-020-03046-8

34. Maize genotype-specific exudation strategies: An adaptive mechanism to increase microbial activity in the rhizosphere

Author:
Nataliya Bilyera; Xuechen Zhang; Patrick Duddek; Lichao Fan; Callum C. Banfield; Steffen Schlüter; Andrea Carminati; Anders Kaestner; Mutez A. Ahmed; Yakov Kuzyakov; Michaela A. Dippold; Sandra Spielvogel; Bahar S. Razavi
Source:
Soil biology & biochemistry 2021 v.162 pp. 108426
ISSN:
0038-0717
Subject:
benzoxazinoids; corn; enzyme activity; exudation; microbial activity; microbiome; mutants; neutrons; radiography; rhizosphere; root hairs; soil; soil organic matter; water content
Abstract:
... Plants stimulate microbial enzyme production in the rhizosphere, regulating soil organic matter decomposition and nutrient cycling. The availability of labile organic compounds (i.e. exudates) and water is the main prerequisite for such microbial activity and enzyme production, thus shaping the rhizosphere. Root morphology (i.e., root hairs) and exudate composition define the spatial distribution ...
DOI:
10.1016/j.soilbio.2021.108426

35. Mass spectrometry‐based metabolomics unravel the transfer of bioactive compounds between rye and neighbouring plants

Author:
Hossein Hazrati; Inge S. Fomsgaard; Ling Ding; Per Kudsk
Source:
Plant, cell and environment 2021 v.44 no.12 pp. 3492-3501
ISSN:
0140-7791
Subject:
benzoxazinoids; environment; mass spectrometry; metabolites; metabolomics; rye; weeds
Abstract:
... Translocation of metabolites between different plant species provides important hints in understanding the fate of bioactive root exudates. In the present study, targeted and untargeted mass spectrometry‐based metabolomics was applied to elucidate the transfer of bioactive compounds between rye and several crops and weed species. Our results demonstrated that benzoxazinoids (BXs) synthesized by ry ...
DOI:
10.1111/pce.14159

36. Metabolic profiling of benzoxazinoids in the roots and rhizosphere of commercial winter wheat genotypes

Author:
James M. Mwendwa; Paul A. Weston; Jeffrey D. Weidenhamer; Inge S. Fomsgaard; Hanwen Wu; Saliya Gurusinghe; Leslie A. Weston
Source:
Plant and soil 2021 v.466 no.1-2 pp. 467-489
ISSN:
0032-079X
Subject:
Magnoliopsida; Triticum aestivum; benzoxazinoids; biotransformation; corn; cultivars; herbicide resistance; integrated weed management; liquid chromatography; mass spectrometry; metabolites; phenology; phytotoxicity; rain; rhizoplane; rye; soil; winter wheat; Australia
Abstract:
... BACKGROUND AND OBJECTIVES: Integrated weed management in commercial wheat production is urgently needed due to increasing herbicide resistance and production costs. Benzoxazinoids (BXs), which include benzoxazinones and benzoxazolinones, are unique bioactive metabolites produced by certain members of the Poaceae including maize, wheat, rye and some dicots. BXs play important roles in plant defence ...
DOI:
10.1007/s11104-021-04996-9

37. Pd-Catalyzed Decarboxylative Olefination: Stereoselective Synthesis of Polysubstituted Butadienes and Macrocyclic P-glycoprotein Inhibitors

Author:
Bichao Song; Peipei Xie; Yingzi Li; Jiping Hao; Lu Wang; Xiangyang Chen; Zhongliang Xu; Haitian Quan; Liguang Lou; Yuanzhi Xia; K. N. Houk; Weibo Yang
Source:
Journal of the American Chemical Society 2020 v.142 no.22 pp. 9982-9992
ISSN:
1520-5126
Subject:
P-glycoproteins; alcohols; benzoxazinoids; butadienes; carbenes; carbonates; catalytic activity; diazo compounds; esters; multiple drug resistance; neoplasm cells; neoplasms; oxazolidinones; palladium; stereoselective synthesis; stereoselectivity
Abstract:
... The efficient and stereoselective synthesis of polysubstituted butadienes, especially the multifunctional butadienes, represents a great challenge in organic synthesis. Herein, we wish to report a distinctive Pd(0) carbene-initiated decarboxylative olefination approach that enables the direct coupling of diazo esters with vinylethylene carbonates (VECs), vinyl oxazolidinones, or vinyl benzoxazinon ...
DOI:
10.1021/jacs.0c00078

38. Pseudomonas fluorescens MZ05 Enhances Resistance against Setosphaeria turcica by Mediating Benzoxazinoid Metabolism in the Maize Inbred Line Anke35

Author:
Cheng Zhou; Zhongyou Ma; Xiaoming Lu; Lin Zhu; Congsheng Yan
Source:
Agriculture (Basel) 2020 v.10 no.2 pp. -
ISSN:
2077-0472
Subject:
Pseudomonas fluorescens; Setosphaeria turcica; Zea mays; benzoxazinoids; biosynthesis; corn; dimboa; disease occurrence; disease resistance; gene expression; gene expression regulation; genes; hydroxamic acids; inbred lines; leaves; pathogens; rhizosphere bacteria; sequence analysis; transcription (genetics)
Abstract:
... Beneficial rhizobacteria can inhibit foliar pathogen infection by activation of defense responses, yet it the mechanisms of rhizobacteria-induced disease resistance remain largely unknown. Here, inoculation of susceptible maize plants with Pseudomonas fluorescens MZ05 significantly reduced disease occurrence caused by the leaf pathogen Setosphaeria turcica. Gene expression profiles of MZ05-inocula ...
DOI:
10.3390/agriculture10020032

39. Root-Exuded Benzoxazinoids: Uptake and Translocation in Neighboring Plants

Author:
Hossein Hazrati; Inge S. Fomsgaard; Per Kudsk
Source:
Journal of agricultural and food chemistry 2020 v.68 no.39 pp. 10609-10617
ISSN:
1520-5118
Subject:
Secale cereale; Vicia villosa; benzoxazinoids; chemical analysis; chemical defenses; coculture; exudation; food chemistry; rapid methods; rhizosphere; root exudates; rye; tandem mass spectrometry
Abstract:
... Plants have evolved advanced chemical defense mechanisms, including root exudation, which enable them to respond to changes occurring in their surroundings rapidly. Yet, it remains unresolved how root exudation affects belowground plant–plant interactions. The objective of this study was to elucidate the fate of benzoxazinoids (BXs) exuded from the roots of rye (Secale cereale L.) plants grown wit ...
DOI:
10.1021/acs.jafc.0c04245

40. Transition-Metal-Free Alkylation and Acylation of Benzoxazinones with 1,4-Dihydropyridines

Author:
Youjung Byun; Junghyea Moon; Won An; Neeraj Kumar Mishra; Hyung Sik Kim; Prithwish Ghosh; In Su Kim
Source:
Journal of organic chemistry 2021 v.86 no.17 pp. 12247-12256
ISSN:
1520-6904
Subject:
acylation; alkylation; benzoxazinoids; drugs; heterocyclic nitrogen compounds; organic chemistry
Abstract:
... The direct functionalization of N-heterocycles is a vital transformation for the development of pharmaceuticals, functional materials, and other chemical entities. Herein, the transition-metal-free alkylation and acylation of C(sp²)–H bonds in biologically relevant 2-benzoxazinones with 1,4-dihydropyridines as readily accessible radical surrogates is described. Excellent functional group compatibi ...
DOI:
10.1021/acs.joc.1c01558

41. The Trichoderma viride F-00612 consortium tolerates 2-amino-3H-phenoxazin-3-one and degrades nitrated benzo[d]oxazol-2(3H)-one

Author:
Nataliya Voloshchuk; Vadim Schütz; Laura Laschke; Andrii P. Gryganskyi; Margot Schulz
Source:
Chemoecology 2020 v.30 no.2 pp. 79-88
ISSN:
0937-7409
Subject:
Acinetobacter calcoaceticus; Enterobacter; Trichoderma viride; acetaminophen; agar; aminophenols; antibiotics; antifungal properties; bacteria; beneficial microorganisms; benzoxazinoids; corn; fungal growth; fungi; grain crops; picolinic acid; screening; secondary metabolites
Abstract:
... Numerous allelopathic plant secondary metabolites impact plant–microorganism interactions by injuring plant-associated beneficial bacteria and fungi. Fungi belonging to the genus Trichoderma positively influence crops, including benzoxazinone-containing maize. However, benzoxazinones and their downstream metabolites such as benzoxazolinone and phenoxazinones are often fungitoxic. Specimen Trichode ...
DOI:
10.1007/s00049-020-00300-w

42. Comparative transcriptomic and metabolic analysis of wild and domesticated wheat genotypes reveals differences in chemical and physical defense responses against aphids

Author:
Zhaniya S. Batyrshina; Beery Yaakov; Reut Shavit; Anuradha Singh; Vered Tzin
Source:
BMC plant biology 2020 v.20 no.1 pp. 19
ISSN:
1471-2229
Subject:
Rhopalosiphum padi; Triticum turgidum subsp. dicoccoides; benzoxazinoids; biosynthesis; durum wheat; germination; herbivores; hexaploidy; insects; metabolites; metabolome; pests; plant hormones; tetraploidy; transcriptome; transcriptomics; trichomes
Abstract:
... BACKGROUND: Young wheat plants are continuously exposed to herbivorous insect attack. To reduce insect damage and maintain their growth, plants evolved different defense mechanisms, including the biosynthesis of deterrent compounds named benzoxazinoids, and/or trichome formation that provides physical barriers. It is unclear whether both of these mechanisms are equally critical in providing an eff ...
DOI:
10.1186/s12870-019-2214-z

43. Differential Stem Proteomics and Metabolomics Profiles for Four Wheat Cultivars in Response to the Insect Pest Wheat Stem Sawfly

Author:
Florent D. Lavergne; Corey D. Broeckling; Kitty J. Brown; Darren M. Cockrell; Scott D. Haley; Frank B. Peairs; Stephen Pearce; Lisa M. Wolfe; Courtney E. Jahn; Adam L. Heuberger
Source:
Journal of proteome research 2020 v.19 no.3 pp. 1037-1051
ISSN:
1535-3907
Subject:
Cephus cinctus; Triticum aestivum; alkaloids; benzoxazinoids; biochemical pathways; cultivars; enzyme inhibition; grain yield; insect pests; lignans; lipids; liquid chromatography; mass spectrometry; metabolites; metabolome; metabolomics; plant breeding; proteinases; proteins; proteome; proteomics; staple crops; wheat
Abstract:
... Common wheat (Triticum aestivum L.) is a global staple crop, and insect pests can impact grain yield. The wheat stem sawfly (Cephus cinctus, WSS) is a major wheat pest, and while partial resistance has been deployed by breeding for a solid-stem trait, this trait is affected by environment. Here, a proteomics and metabolomics study was performed on four wheat cultivars to characterize a molecular r ...
DOI:
10.1021/acs.jproteome.9b00561

44. Dynamic gene amplification and function diversification of grass-specific O-methyltransferase gene family

Author:
Zhen Liu; Miao Fan; Chao Li; Jian-Hong Xu
Source:
Genomics 2019 v.111 no.4 pp. 687-695
ISSN:
0888-7543
Subject:
S-adenosylmethionine; benzoxazinoids; biosynthesis; gene amplification; gene expression; genes; grasses; insect resistance; methyltransferases; phylogeny; roots; secondary metabolites; suberin
Abstract:
... The plant O-methyltransferases are dependent on S-Adenosyl-l-methionine, which can catalyze a variety of secondary metabolites. Here we identified different number of OMT genes from the respective grass genomes. Phylogenetic analysis showed that this OMT gene family is a grass-specific gene family that is different from COMT. Most of genes were expanded by tandem and segment duplication after the ...
DOI:
10.1016/j.ygeno.2018.04.005

45. Metabolite profiling and genome‐wide association studies reveal response mechanisms of phosphorus deficiency in maize seedling

Author:
Bowen Luo; Peng Ma; Zhi Nie; Xiao Zhang; Xuan He; Xin Ding; Xing Feng; Quanxiao Lu; Zhiyong Ren; Haijian Lin; Yuanqi Wu; Yaou Shen; Suzhi Zhang; Ling Wu; Dan Liu; Guangtang Pan; Tingzhao Rong; Shibin Gao
Source:
plant journal 2019 v.97 no.5 pp. 947-969
ISSN:
0960-7412
Subject:
Zea mays; alanine; benzoxazinoids; biochemical pathways; corn; enzymes; flavonoids; genes; genome-wide association study; immune response; inbred lines; inorganic phosphorus; isoleucine; leaves; lipids; nitrogen compounds; nucleic acids; organic acids and salts; quantitative polymerase chain reaction; reverse transcriptase polymerase chain reaction; reverse transcription; roots; secondary metabolites; seedlings; signal transduction; stress response; sugars
Abstract:
... Inorganic phosphorus (Pi) is an essential element in numerous metabolic reactions and signaling pathways, but the molecular details of these pathways remain largely unknown. In this study, metabolite profiles of maize (Zea mays L.) leaves and roots were compared between six low‐Pi‐sensitive lines and six low‐Pi‐tolerant lines under Pi‐sufficient and Pi‐deficient conditions to identify pathways and ...
DOI:
10.1111/tpj.14160
PubMed:
30472798
PubMed Central:
PMC6850195

46. Setaria viridis as a model for translational genetic studies of jasmonic acid-related insect defenses in Zea mays

Author:
Charles T Hunter; Anna K Block; Shawn A Christensen; Qin-Bao Li; Caitlin Rering; Hans T Alborn
Source:
Plant science 2020 v.291 pp. 110329
ISSN:
0168-9452
Subject:
Setaria viridis; Zea mays; benzoxazinoids; chemical defenses; chemistry; corn; engineering; gene expression; genes; genetic similarity; grasses; insect larvae; insects; jasmonic acid; metabolism; models; phylogeny; quantitative polymerase chain reaction; secondary metabolites; transcription (genetics)
Abstract:
... Little is known regarding insect defense pathways in Setaria viridis (setaria), a model system for panicoid grasses, including Zea mays (maize). It is thus of interest to compare insect herbivory responses of setaria and maize. Here we use metabolic, phylogenetic, and gene expression analyses to measure a subset of jasmonic acid (JA)-related defense responses to leaf-chewing caterpillars. Phylogen ...
DOI:
10.1016/j.plantsci.2019.110329
CHORUS:
10.1016/j.plantsci.2019.110329

47. An efficient system composed of maize protoplast transfection and HPLC–MS for studying the biosynthesis and regulation of maize benzoxazinoids

Author:
Lei Gao; Guojing Shen; Lingdan Zhang; Jinfeng Qi; Cuiping Zhang; Canrong Ma; Jing Li; Lei Wang; Saif Ul Malook; Jianqiang Wu
Source:
Plant methods 2019 v.15 no.1 pp. 144
ISSN:
1746-4811
Subject:
Zea mays; benzoxazinoids; biochemical pathways; biosynthesis; corn; etiolation; gene overexpression; genes; herbivores; high performance liquid chromatography; insects; mass spectrometry; mesophyll; microRNA; mutants; protoplasts; rapid methods; screening; secondary metabolites; seedlings; transfection
Abstract:
... BACKGROUND: Insect herbivory poses a major threat to maize. Benzoxazinoids are important anti-insect secondary metabolites in maize, whose biosynthetic pathway has been extensively studied. However, yet little is known about how benzoxazinoids are regulated in maize, partly due to lack of mutant resources and recalcitrance to genetic transformation. Transient systems based on mesophyll- or culture ...
DOI:
10.1186/s13007-019-0529-2
PubMed:
31798670
PubMed Central:
PMC6882228

48. A unique aluminum resistance mechanism conferred by aluminum and salicylic-acid-activated root efflux of benzoxazinoids in maize

Author:
Zunkang Zhao; Xiaofeng Gao; Ye Ke; Minmin Chang; Lu Xie; Xiaofeng Li; Minghua Gu; Jiping Liu; Xinlian Tang
Source:
Plant and soil 2019 v.437 no.1-2 pp. 273-289
ISSN:
0032-079X
Subject:
aluminum; benzoxazinoids; biosynthesis; chelation; corn; cultivars; exudation; hydroxamic acids; root growth; root tips; salicylic acid
Abstract:
... BACKGROUND AND AIMS: Although aluminum (Al) exclusion via root exudation of organic matters is a common resistance mechanism adopted by many plant species, whether root exudation of benzoxazinoids, such as hydroxamic acids (HAs), confers Al resistance remains unclear. METHODS: We performed physiological characterization for an Al-resistant maize cultivar TY and a sensitive maize cultivar ZD. RESUL ...
DOI:
10.1007/s11104-019-03971-9

49. 12-Oxo-Phytodienoic Acid Acts as a Regulator of Maize Defense against Corn Leaf Aphid

Author:
Suresh Varsani; Sajjan Grover; Shaoqun Zhou; Kyle G. Koch; Pei-Cheng Huang; Michael V. Kolomiets; W. P. Williams; Tiffany Heng-Moss; Gautam Sarath; Dawn S. Luthe; Georg Jander; Joe Louis
Source:
Plant physiology 2019 v.179 no.4 pp. 1402-1415
ISSN:
0032-0889
Subject:
Rhopalosiphum maidis; Zea mays; benzoxazinoids; callose; conjugated linoleic acid; corn; electrophysiology; ethylene production; feeding behavior; genes; grain crops; inbred lines; insect pests; insect resistance; jasmonic acid; messenger RNA; metabolites; monitoring; phloem; plant breeding; proteinases; synergism; toxicity
Abstract:
... The corn leaf aphid (CLA; Rhopalosiphum maidis) is a phloem sap-sucking insect that attacks many cereal crops, including maize (Zea mays). We previously showed that the maize inbred line Mp708, which was developed by classical plant breeding, provides enhanced resistance to CLA. Here, using electrophysiological monitoring of aphid feeding behavior, we demonstrate that Mp708 provides phloem-mediate ...
Handle:
10113/6757200
DOI:
10.1104/pp.18.01472
PubMed:
30643012
PubMed Central:
PMC6446797
CHORUS:
10.1104/pp.18.01472

50. The Asian corn borer Ostrinia furnacalis feeding increases the direct and indirect defence of mid‐whorl stage commercial maize in the field

Author:
Jingfei Guo; Jinfeng Qi; Kanglai He; Jianqiang Wu; Shuxiong Bai; Tiantao Zhang; Jiuran Zhao; Zhenying Wang
Source:
Plant biotechnology journal 2019 v.17 no.1 pp. 88-102
ISSN:
1467-7644
Subject:
Macrocentrus; Ostrinia furnacalis; Zea mays; benzoxazinoids; biotechnology; corn; gene expression; gene expression regulation; herbivores; hybrids; metabolome; parasitic wasps; plant hormones; transcriptome
Abstract:
... The Asian corn borer (Ostrinia furnacalis Guenée) is a destructive pest of maize (Zea mays L.). Despite large‐scale commercial maize production, little is known about the defensive responses of field‐grown commercial maize to O. furnacalis herbivory, and how these responses result in direct and indirect defence against this pest. To elucidate the maize transcriptome response to O. furnacalis feedi ...
DOI:
10.1111/pbi.12949
PubMed:
29754404
PubMed Central:
PMC6330542