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1. Design of new glycosyl–O‐fipronil conjugates with improved hydrolysis efficiency assisted by molecular simulations

Author:
Bingfeng Wang; Chen Yang; Xunyuan Jiang; Yingjie Wen; Yongqing Tian; Chen Zhao; Hanhong Xu
Source:
Pest management science 2022 v.78 no.6 pp. 2667-2678
ISSN:
1526-498X
Subject:
phloem,   etc   ; Plutella xylostella; Ricinus; hydrolysis; models; moieties; pesticides; pyrroles; sap;     Show all 9 Subjects
Abstract:
... BACKGROUND: In a previous study, we showed that two glycosyl–pesticide conjugates with a β‐d‐glucoside moiety, N‐{3‐cyano‐1‐[2,6‐dichloro‐4‐(trifluoromethyl) phenyl]‐4‐[(trifluoromethyl)‐sulfinyl]‐1H‐pyrazol‐5‐yl}‐2‐aminoethyl‐β‐d‐glucopyranoside (GOF) and N‐{3‐cyano‐1‐[2,6‐dichloro‐4‐(trifluoromethyl)phenyl]‐4‐[(trifluoromethyl) sulfinyl]‐1H‐pyrazol‐5‐yl}‐1‐(2‐triazolethyl‐β‐d‐glucopyranoside)‐1H ...
DOI:
10.1002/ps.6898

2. Systemic silencing of an endogenous plant gene by two classes of mobile 21‐nucleotide artificial small RNAs

Author:
Adriana E. Cisneros; Ainhoa de la Torre‐Montaña; Alberto Carbonell
Source:
plant journal 2022 v.110 no.4 pp. 1166-1181
ISSN:
0960-7412
Subject:
phloem,   etc   ; Nicotiana benthamiana; gene expression; genes; magnesium chelatase; microRNA; petioles; phenotype; sulfur;     Show all 9 Subjects
Abstract:
... Artificial small RNAs (art‐sRNAs) are 21‐nucleotide small RNAs (sRNAs) computationally designed to silence plant genes or pathogenic RNAs with high efficacy and specificity. They are typically produced in transgenic plants to induce silencing at the whole‐organism level, although their expression in selected tissues for inactivating genes in distal tissues has not been reported. Here, art‐sRNAs de ...
DOI:
10.1111/tpj.15730

3. Tracing boron dynamics in agro-ecosystems using enriched (¹⁰B, ¹¹B) stable isotopic signatures: A centennial legacy

Author:
Phillip Chalk; Christopher J. Smith; Deli Chen; Ji-Zheng He
Source:
Archiv für Acker- und Pflanzenbau und Bodenkunde 2022 v.68 no.4 pp. 561-578
ISSN:
1476-3567
Subject:
phloem,   etc   ; agroecosystems; atomic absorption spectrometry; boric acid; boron; horticulture; leaves; plant nutrition; xylem;     Show all 9 Subjects
Abstract:
... For many years after the discovery of the two stable isotopes of B (¹⁰B,¹¹B) in 1920 it was not used routinely as a tracer in the biological sciences until the development of inductively coupled plasma mass spectrometry in the early 1980s. This development provided an impetus to the study of the role of B in plant nutrition, although many seminal discoveries were made beforehand without the aid of ...
DOI:
10.1080/03650340.2020.1858232

4. Early spring flowers rely on xylem hydration but are not limited by stem xylem conductivity

Author:
Natalie McMann; Alexander Peichel; Jessica A. Savage
Source:
The new phytologist 2022 v.233 no.2 pp. 838-850
ISSN:
0028-646X
Subject:
phloem,   etc   ; flower morphology; flowering; flowers; gas exchange; spring; transpiration; water content; woody plants; xylem;     Show all 10 Subjects
Abstract:
... Many woody plants produce large floral displays early in the spring when xylem transport can be variable and often reduced. To determine whether stem hydraulics impact floral water use, we quantified floral transpiration and tested whether it was correlated with stem xylem conductivity in five temperate woody species that flower before producing leaves. We measured inflorescence gas exchange, exam ...
DOI:
10.1111/nph.17782

5. Inter-species mRNA transfer among green peach aphids, dodder parasites, and cucumber host plants

Author:
Juan Song; Jinge Bian; Na Xue; Yuxing Xu; Jianqiang Wu
Source:
Plant diversity 2022 v.44 no.1 pp. 1-10
ISSN:
2468-2659
Subject:
phloem,   etc   ; Cucumis sativus; Cuscuta australis; Myzus persicae; cucumbers; peaches; species diversity; statistical analysis; transcriptomics;     Show all 9 Subjects
Abstract:
... mRNAs are transported within a plant through phloem. Aphids are phloem feeders and dodders (Cuscuta spp.) are parasites which establish phloem connections with host plants. When aphids feed on dodders, whether there is trafficking of mRNAs among aphids, dodders, and host plants and if aphid feeding affects the mRNA transfer between dodders and hosts are unclear. We constructed a green peach aphid ...
DOI:
10.1016/j.pld.2021.03.004

6. PbANK facilitates the long-distance movement of the PbWoxT1–PbPTB3 RNP complex by degrading deposited callose

Author:
Shengyuan Wang; Yunfei Yu; Chaoran Xu; Ling Xiang; Wenting Huang; Chuan Zhang; Shiyue Sun; Tianzhong Li; Shengnan Wang
Source:
Plant science 2022 v.318 pp. 111232
ISSN:
0168-9452
Subject:
phloem,   etc   ; Pyrus betulifolia; cDNA libraries; callose; fluorescence microscopy; horticulture; phenotype; plasmodesmata; ribonucleoproteins; rootstocks; scions;     Show all 11 Subjects
Abstract:
... Grafting horticultural crops can result in phenotypic changes in the grafted materials due to the movement of macromolecular signals, including RNAs and proteins, across the graft union; however, little is known about the composition of trafficking ribonucleoprotein (RNP) complexes or how these macromolecules are transported. Here, we used the core of PbPTB3-PbWoxT1 RNP complex, PbPTB3, as bait to ...
DOI:
10.1016/j.plantsci.2022.111232

7. Zinc regulation of iron uptake and translocation in rice (Oryza sativa L.): Implication from stable iron isotopes and transporter genes

Author:
Qiqi Wu; Chengshuai Liu; Zhengrong Wang; Ting Gao; Yuhui Liu; Yafei Xia; Runsheng Yin; Meng Qi
Source:
Environmental pollution 2022 v.297 pp. 118818
ISSN:
0269-7491
Subject:
phloem,   etc   ; Oryza sativa; isotopes; leaves; models; nicotianamine; nutrient deficiencies; nutrient solutions; pollution; rice; zinc;     Show all 11 Subjects
Abstract:
... Iron (Fe) is an essential nutrient for living organisms and Fe deficiency is a worldwide problem for the health of both rice and humans. Zinc (Zn) contamination in agricultural soils is frequently observed. Here, we studied Fe isotope compositions and transcript levels of Fe transporter genes in rice growing in nutrient solutions having a range of Zn concentrations. Our results show Zn stress redu ...
DOI:
10.1016/j.envpol.2022.118818

8. Advanced infections by cucurbit yellow stunting disorder virus encourage whitefly vector colonization while discouraging non-vector aphid competitors

Author:
Quentin Chesnais; Penglin Sun; Kerry E. Mauck
Source:
Journal of pest science 2022 v.95 no.1 pp. 231-247
ISSN:
1612-4758
Subject:
phloem,   etc   ; Aphis gossypii; Bemisia tabaci; Cucumis melo; leaves; metabolites; metabolomics; muskmelons; pests; progeny; virion; viruses;     Show all 12 Subjects
Abstract:
... Plant viruses can change hosts in ways that increase vector contacts, virion acquisition, and subsequent vector dispersal to susceptible hosts. Based on this, researchers have proposed that virus-induced phenotypes are the product of adaptations to “manipulate” hosts in ways that increase transmission. Theoretical models of virus spread in crops support this proposition; “manipulative” viruses spr ...
DOI:
10.1007/s10340-021-01394-z

9. Climatic regulation of leaf and cambial phenology in Quercus pubescens: Their interlinkage and impact on xylem and phloem conduits

Author:
Jožica Gričar; Jernej Jevšenak; Polona Hafner; Peter Prislan; Mitja Ferlan; Martina Lavrič; Dominik Vodnik; Klemen Eler
Source:
Science of the total environment 2022 v.802 pp. 149968
ISSN:
0048-9697
Subject:
phloem,   etc   ; Quercus pubescens; autumn; cambium; drought; leaf development; leaves; phenology; spring; summer; temperature; winter; xylem;     Show all 13 Subjects
Abstract:
... Increased frequency and severity of stressful events affects the growth patterns and functioning of trees which adjust their phenology to given conditions. Here, we analysed environmental effects (temperature, precipitation, VPD and SWC) on the timing of leaf phenology, seasonal stem radial growth patterns, and xylem and phloem anatomy of Quercus pubescens in the sub-Mediterranean in the period 20 ...
DOI:
10.1016/j.scitotenv.2021.149968

10. Soybean GmSUT1 transporter participates in sucrose transport to nodules during rhizobial symbiosis

Author:
Lulu Deng; Shaopeng Zhao; Guoling Yang; Shengnan Zhu; Jiang Tian; Xiurong Wang
Source:
Plant growth regulation 2022 v.96 no.1 pp. 119-129
ISSN:
0167-6903
Subject:
phloem,   etc   ; genetically modified organisms; glucose; nitrogen content; nodulation; plant growth; plasma membrane; soybeans; sucrose; symbiosis;     Show all 10 Subjects
Abstract:
... Symbiotic N₂ fixation depends on a steady supply of carbohydrate to nodules. Sucrose is the main carbohydrate translocated through the phloem to nodules. Some putative sucrose transporter genes have been found in legumes and are highly expressed in nodules. However, none of these are crucial for sucrose transport to nodules. In this study, we characterized a soybean sucrose transporter, GmSUT1, wh ...
DOI:
10.1007/s10725-021-00764-y

11. Systemic fungicidal activity of phenazine‐1‐carboxylic acid‐valine conjugate against tobacco sore shin and its translocation and accumulation in tobacco (Nicotiana tabacum L.)

Author:
Xiang Zhu; Min Zhang; Yongxin Xiao; Tom Hsiang; Ciyin Hu; Junkai Li
Source:
Pest management science 2022 v.78 no.3 pp. 1117-1127
ISSN:
1526-498X
Subject:
phloem,   etc   ; Nicotiana tabacum; Thanatephorus cucumeris; amino acids; antifungal properties; fungi; fungicides; leaves; seedlings; tobacco; tobacco industry;     Show all 11 Subjects
Abstract:
... BACKGROUND: Tobacco sore shin caused by Rhizoctonia solani Kühn is a major soil‐borne fungal disease of tobacco, gradually causing infected stems to become thin and dry, leading to great losses to Chinaʼs tobacco industry. Fungicides with phloem mobility are needed for application to foliage to effectively control root or vascular system pathogens. In this study, phenazine‐1‐carboxylic acid‐valine ...
DOI:
10.1002/ps.6724

12. Morpho-physio and anatomical characterization of the indigenous Himalayan crabapple: Malus baccata (L.) Borkh. (Rohru) and exotic Malus pumila Mill. for dwarfing traits

Author:
Chavlesh Kumar; Sanjay Kumar Singh; Mahendra Kumar Verma; Kallol Kumar Pramanick; Manish Srivastav; Sukhdeep Kaur; Rajeev Ranjan Kumar
Source:
Genetic resources and crop evolution 2022 v.69 no.2 pp. 645-659
ISSN:
0925-9864
Subject:
phloem,   etc   ; Malus baccata; Malus pumila; apples; bark; evolution; gene banks; germplasm; horticulture; photosynthesis; rootstocks; vigor; wood; xylem;     Show all 14 Subjects
Abstract:
... The wild Malus germplasm is considered as a gene reservoir for various biotic and abiotic stresses tolerance/resistance genes, including important novel horticultural traits. The dwarf vigour is considered an important trait in Malus for promoting high-density plantations and enhancing productivity. Thus, an indigenous and exotic wild Malus species collected in the apple field gene bank were evalu ...
DOI:
10.1007/s10722-021-01250-0

13. Petiole anatomy of some species of Bauhinia L. sensu lato (Leguminosae Juss.) occurring in India

Author:
Kishore S. Rajput; Sandip R. Dayatar; Manoj M. Lekhak; Amit D. Gondaliya
Source:
Nordic journal of botany 2022 v.2022 no.2 pp. e03303
ISSN:
0107-055X
Subject:
phloem,   etc   ; Bauhinia variegata; Phanera; Schnella; light microscopy; parenchyma (plant tissue); petioles; pith; secondary xylem; species identification; India;     Show all 11 Subjects
Abstract:
... The petiole is a vital part of the leaf that acts as a bridge between the lamina and stem or branch for the transport of photosynthate, minerals, nutrients and provide flexible mechanical support to the lamina. Its anatomy remains unique and species‐specific. Therefore, twelve species of Bauhinia sensu lato were investigated histologically in the present study. The disparities in the petiole outli ...
DOI:
10.1111/njb.03303

14. Study on the selectivity and phloem mobility of Fenoxaprop-P amino acid ester conjugates on rice and barnyard grass

Author:
Xingliang Lu; Chuan Qin; Jinlong Cai; Min Zhang; Linhua Yu; Junkai Li; Qinglai Wu
Source:
Pesticide biochemistry and physiology 2022 v.183 pp. 105086
ISSN:
0048-3575
Subject:
phloem,   etc   ; Brassica rapa subsp. oleifera; Echinochloa crus-galli; amino acids; bioassays; fenoxaprop; germination; herbicidal properties; phytotoxicity; rice;     Show all 10 Subjects
Abstract:
... To improve the selectivity of the fenoxaprop herbicide to rice and barnyard grass, a series of fenoxaprop-P-ethyl-amino acid ester conjugates were designed and synthesized, and tested for biological activity as well as their phloem mobility. The bioassay results indicated that the target compounds possessed better activity against barnyard grass (Echinochloa crusgalli) than rape (Brassica campestr ...
DOI:
10.1016/j.pestbp.2022.105086

15. Local and systemic effect of azadirachtin on host choice and feeding activity of Macrosiphum rosae on rose plants

Author:
Imke Bartelsmeier; Michael Kilian; Cindy J. M. ten Broeke; Daan Mertens; Marcel Dicke
Source:
Arthropod-plant interactions 2022 v.16 no.2 pp. 191-204
ISSN:
1872-8855
Subject:
phloem,   etc   ; Azadirachta indica; Macrosiphum rosae; active ingredients; antifeedants; antifeeding activity; arthropods; azadirachtin; excretion; greenhouses; honeydew; mortality; starvation; toxicity;     Show all 14 Subjects
Abstract:
... Many studies in the last decades addressed the antifeedant and repellent effects of neem (Azadirachta indica)-based pesticides on arthropod herbivores with azadirachtin as the leading active ingredient. However, results for aphids regarding repellence and feeding were often contradictory and mainly based on laboratory studies with self-made neem extracts in high concentrations. Moreover, no data a ...
DOI:
10.1007/s11829-022-09889-x

16. Significant suppression of invasive emerald ash borer by introduced parasitoids: potential for North American ash recovery

Author:
Jian J. Duan; Roy G. Van Driesche; Jonathan Schmude; Ryan Crandall; Claire Rutlege; Nicole Quinn; Benjamin H. Slager; Juli R. Gould; Joseph S. Elkinton
Source:
Journal of pest science 2022 v.95 no.3 pp. 1081-1090
ISSN:
1612-4758
Subject:
phloem,   etc   ; Agrilus planipennis; Spathius; Tetrastichus planipennisi; biological control; hardwood; mortality; parasitism; parasitoids; population growth; Asia; Northeastern United States;     Show all 12 Subjects
Abstract:
... Successful management of invasive forest pests with sustainable approaches, such as biological control, is critical to the restoration of the affected or damaged forest ecosystems. Several parasitoids introduced from Northeast Asia were released between 2015 and 2017 in several northeastern states of the USA for biocontrol of the invasive emerald ash borer (EAB), Agrilus planipennis. Using life ta ...
DOI:
10.1007/s10340-021-01441-9

17. Virus Infection and Host Plant Suitability Affect Feeding Behaviors of Cannabis Aphid (Hemiptera: Aphididae), a Newly Described Vector of Potato Virus Y

Author:
William Jacob Pitt; Lisa Kairy; Emily Villa; Vamsi J. Nalam; Punya Nachappa
Source:
Environmental entomology 2022 v.51 no.2 pp. 322-331
ISSN:
0046-225X
Subject:
phloem,   etc   ; Cannabis sativa; Phorodon; Potato virus Y; Solanum tuberosum; acreage; entomology; hemp; host plants; potatoes; virus transmission; viruses;     Show all 12 Subjects
Abstract:
... Aphids are the most prolific vectors of plant viruses resulting in significant yield losses to crops worldwide. Potato virus Y (PVY) is transmitted in a non-persistent manner by 65 species of aphids.With the increasing acreage of hemp (Cannabis sativa L.) (Rosales: Cannabaceae) in the United States, we were interested to know if the cannabis aphid (Phorodon cannabis Passerini) (Hemiptera: Aphidida ...
DOI:
10.1093/ee/nvac001

18. Do woody vines use gelatinous fibers to climb?

Author:
Joyce G. Chery; Rosemary A. E. Glos; Charles T. Anderson
Source:
The new phytologist 2022 v.233 no.1 pp. 126-131
ISSN:
0028-646X
Subject:
phloem,   etc   ; cortex; phylogeny; vascular plants; xylem;     Show all 5 Subjects
Abstract:
... Many plant movements are facilitated by contractile cells called gelatinous fibers (G‐fibers), but how G‐fibers function in the climbing movements of woody vines remains underexplored. In this Insight, we compare the presence and distribution of G‐fibers in the stems of stem‐twiners, which wrap around supports, with non‐stem‐twiners, which attach to supports via tendrils or adventitious roots. An ...
DOI:
10.1111/nph.17576

19. Effect of inorganic nitrogen and phosphorous on morphology, ion uptake and photosynthesis activity in Jerusalem artichoke plants under salt stress

Author:
Xiao Ming Yin; Xiao Hua Long; Tian Yun Shao
Source:
Journal of plant nutrition 2022 v.45 no.9 pp. 1378-1392
ISSN:
1532-4087
Subject:
phloem,   etc   ; Jerusalem artichokes; biomass; calcium; inorganic phosphorus; ion transport; nitrogen; photosynthesis; plant growth; plant nutrition; salt stress; total nitrogen;     Show all 12 Subjects
Abstract:
... This study was conducted to explore the effects of adding different amounts of exogenous inorganic nitrogen (Ca (NO₃)₂ 1 mM marked as N1, Ca (NO₃)₂ 5 mM marked as Nc and Ca (NO₃)₂ 7 mM marked as N2) and inorganic phosphorus (NaH₂PO₄ 0.1 mM marked as P1, NaH₂PO₄ 1 mM marked as Pc and NaH₂PO₄ 8 mM marked as P2) on the physiological and biochemical processes of Jerusalem artichoke under salt stress ( ...
DOI:
10.1080/01904167.2021.2020828

20. Identification of novel regulators required for early development of vein pattern in the cotyledons by single‐cell RNA‐sequencing

Author:
Zhixin Liu; Jiajing Wang; Yaping Zhou; Yixin Zhang; Aizhi Qin; Xiaole Yu; Zihao Zhao; Rui Wu; Chenxi Guo; George Bawa; Jean‐David Rochaix; Xuwu Sun
Source:
plant journal 2022 v.110 no.1 pp. 7-22
ISSN:
0960-7412
Subject:
phloem,   etc   ; RNA; cotyledons; early development; energy; gene expression; leaves; photosynthesis; sequence analysis; sustainable development; transcription (genetics); transcription factors; transcriptomics; xylem;     Show all 14 Subjects
Abstract:
... The leaf veins of higher plants contain a highly specialized vascular system comprised of xylem and phloem cells that transport water, organic compounds and mineral nutrients. The development of the vascular system is controlled by phytohormones that interact with complex transcriptional regulatory networks. Before the emergence of true leaves, the cotyledons of young seedlings perform photosynthe ...
DOI:
10.1111/tpj.15719