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1. Xuanweioxylon damogouense sp. nov., a gymnosperm stem from the Lopingian (late Permian) of southwestern China and its systematic and paleoecological implications

Author:
Yang, Yang; He, Xiao-Yuan; Hilton, Jason; Zhao, Fu-Guang; Chen, Xin-Shi; Wang, Shi-Jun
Source:
Review of palaeobotany and palynology 2019 v.269 pp. 94-103
ISSN:
0034-6667
Subject:
Gymnospermae,   etc   ; Lopingian epoch; climate; conifers; drought; growth rings; new species; paleoecology; pith; tracheids; China;     Show all 11 Subjects
Abstract:
... A new species of permineralized gymnosperm stem is described from volcaniclastic tuffs in Lopingian (late Permian) Xuanwei Formation from eastern Yunnan province, China. The stem comprises well-preserved tissues of the pith, primary and secondary xylem. Pith is divided into a thick-walled parenchymatous peripheral zone and an inner parenchymatous part. Primary xylem strands are numerous and indist ...
DOI:
10.1016/j.revpalbo.2019.06.012

2. Using Morphogenic Genes to Improve Recovery and Regeneration of Transgenic Plants

Author:
Gordon-Kamm, Bill; Sardesai, Nagesh; Arling, Maren; Lowe, Keith; Hoerster, George; Betts, Scott; Jones, Todd
Source:
Plants 2019 v.8 no.2
ISSN:
2223-7747
Subject:
Gymnospermae,   etc   ; crops; gene overexpression; genes; meristems; morphogenesis; phenotype; promoter regions; somatic embryogenesis; tissue culture; transgenic plants;     Show all 11 Subjects
Abstract:
... Efficient transformation of numerous important crops remains a challenge, due predominantly to our inability to stimulate growth of transgenic cells capable of producing plants. For years, this difficulty has been partially addressed by tissue culture strategies that improve regeneration either through somatic embryogenesis or meristem formation. Identification of genes involved in these developme ...
DOI:
10.3390/plants8020038

3. Variations in hydrogen isotopic fractionation in higher plants and sediments across different latitudes: Implications for paleohydrological reconstruction

Author:
Liu, Jinzhao; An, Zhisheng
Source:
The Science of the total environment 2019 v.650 pp. 470-478
ISSN:
0048-9697
Subject:
Gymnospermae,   etc   ; Liliopsida; Magnoliopsida; aquatic plants; databases; hydrogen; hydrology; isotope fractionation; lakes; latitude; leaves; sediments;     Show all 12 Subjects
Abstract:
... Sedimentary δDn-alkane value is widely utilized as a reliable proxy for paleo-hydrological reconstruction. Applications of this proxy must be based upon a globally clear understanding of the relationship between leaf wax δDn-alkane values and precipitation δD (δDp), defined as apparent fractionation (εapp). However, there is a critical concern about whether relatively constant εapp values exist ac ...
DOI:
10.1016/j.scitotenv.2018.09.047

4. Of puzzles and pavements: a quantitative exploration of leaf epidermal cell shape

Author:
Vőfély, Róza V.; Gallagher, Joseph; Pisano, Grace D.; Bartlett, Madelaine; Braybrook, Siobhan A.
Source:
Thenew phytologist 2019 v.221 no.1 pp. 540-552
ISSN:
0028-646X
Subject:
Gymnospermae,   etc   ; Arabidopsis thaliana; Zea mays; corn; ferns and fern allies; games; leaves; models; pavements; phylogeny; trichomes;     Show all 11 Subjects
Abstract:
... Epidermal cells of leaves are diverse: tabular pavement cells, trichomes, and stomatal complexes. Pavement cells from the monocot Zea mays (maize) and the eudicot Arabidopsis thaliana (Arabidopsis) have highly undulate anticlinal walls. The molecular basis for generating these undulating margins has been extensively investigated in these species. This has led to two assumptions: first, that partic ...
DOI:
10.1111/nph.15461

5. On the hydraulic conductance of three woody Devonian plants

Author:
Cascales-Miñana, B.; Gerrienne, P.; Sirjacq, B.; Steemans, P.; Decombeix, Anne-Laure
ISSN:
0928-1541
Subject:
Gymnospermae,   etc   ; Devonian period; biodiversity; fossils; new genus; secondary xylem; tracheids; vascular plants; woody plants; Belgium;     Show all 10 Subjects
Abstract:
... Most evolutionary innovations in plant vascular tissues, including secondary growth, occurred during the Devonian period (~420 to 360 million years ago). Such innovations had a major impact on land colonisation by plants and on their biodiversity. Here, we show the hydraulic conductance of the secondary xylem of three shrubby or arborescent plant fossils (a probably new genus of Cladoxylopsida, th ...
DOI:
10.1163/22941932-40190232

6. Photosynthesis Optimized across the Phylogeny of Land Plants

Author:
Gago, Jorge; Carriquí, Marc; Nadal, Miquel; Clemente-Moreno, María José; Coopman, Rafael Eduardo; Fernie, Alisdair Robert; Flexas, Jaume
Source:
Trends in plant science 2019
ISSN:
1360-1385
Subject:
Gymnospermae,   etc   ; Angiospermae; Bryophyta; crops; embryophytes; ferns and fern allies; mesophyll; photosynthesis; phylogeny; stomatal conductance;     Show all 10 Subjects
Abstract:
... Until recently, few data were available on photosynthesis and its underlying mechanistically limiting factors in plants, other than crops and model species. Currently, a new large pool of data from extant representatives of basal terrestrial plant groups is emerging, allowing exploration of how photosynthetic capacity (Amax) increases from minimum values in bryophytes to maximum in tracheophytes, ...
DOI:
10.1016/j.tplants.2019.07.002

7. Traditional knowledge in semi-rural close to industrial areas: ethnobotanical studies in western Gironès (Catalonia, Iberian Peninsula)

Author:
Gras, Airy; Serrasolses, Ginesta; Vallès, Joan; Garnatje, Teresa
Source:
Journal of ethnobiology and ethnomedicine 2019 v.15 no.1 pp. 19
ISSN:
1746-4269
Subject:
Gymnospermae,   etc   ; Angiospermae; basins; common names; ethnobotany; ferns and fern allies; indigenous knowledge; industrialization; interviews; men; villages; women; Iberian Peninsula; Spain;     Show all 14 Subjects
Abstract:
... BACKGROUND: The western Gironès is a district located in NE Catalonia (NE Iberian Peninsula). This area comprising 186.55 km² and 10,659 inhabitants is composed of 5 municipalities encompassing 29 villages, located in the hydrographic basins of the Ter and Llémena rivers. METHODS: Following the methodology based on the semi-structured interviews, we carried out 40 interviews with 57 informants, 31 ...
DOI:
10.1186/s13002-019-0295-2

8. Nuclear Genome Size is Positively Correlated with Median LTR-RT Insertion Time in Fern and Lycophyte Genomes

Author:
Baniaga, Anthony E.; Barker, Michael S.
Source:
American fern journal 2019 v.109 no.3 pp. 248-266
ISSN:
0002-8444
Subject:
Gymnospermae,   etc   ; Angiospermae; Salviniaceae; Selaginella; ferns and fern allies; haploidy; life history; methylation; nuclear genome; retrotransposons; terminal repeat sequences; vascular plants;     Show all 12 Subjects
Abstract:
... Nuclear genome size is highly variable in vascular plants. The composition of long terminal repeat retrotransposons (LTR-RTs) is a chief mechanism of long term change in the amount of nuclear DNA. Compared to flowering plants, little is known about LTR-RT dynamics in ferns and lycophytes. Drawing upon the availability of recently sequenced fern and lycophyte genomes we investigated these dynamics ...
DOI:
10.1640/0002-8444-109.3.248

9. Differential responses of stomatal kinetics and steady‐state conductance to abscisic acid in a fern: comparison with a gymnosperm and an angiosperm

Author:
Grantz, David A.; Linscheid, Brandon S.; Grulke, Nancy E.
Source:
Thenew phytologist 2019 v.222 no.4 pp. 1883-1892
ISSN:
0028-646X
Subject:
Gymnospermae,   etc   ; Angiospermae; abscisic acid; ferns and fern allies; gas exchange; models; phylogeny; soybeans; stomata; stomatal conductance; stomatal movement;     Show all 11 Subjects
Abstract:
... Origins of abscisic acid (ABA)‐mediated metabolic control of stomatal conductance have been suggested to be recent, based on a gradualistic model of stomatal evolution. In ferns, steady‐state stomatal conductance (gₛ) was unresponsive to ABA in some studies, supporting this model. Stomatal kinetic responses to ABA have not been considered. We used dynamic gas exchange methods to characterise half ...
DOI:
10.1111/nph.15736
CHORUS:
10.1111/nph.15736

10. Early Carboniferous lignophyte tree diversity in Australia: Woods from the Drummond and Yarrol basins, Queensland

Author:
Decombeix, Anne-Laure; Galtier, Jean; McLoughlin, Stephen; Meyer-Berthaud, Brigitte; Webb, Gregory E.; Blake, Paul R.
Source:
Review of palaeobotany and palynology 2019 v.263 pp. 47-64
ISSN:
0034-6667
Subject:
Gymnospermae,   etc   ; Devonian period; Mississippian period; basins; fossils; leaves; morphs; new genus; secondary xylem; trees; wood; Europe; North America; Queensland;     Show all 14 Subjects
Abstract:
... Early Carboniferous (Mississippian) permineralized woods from Australia with multiseriate rays have been customarily assigned or compared to the European genus Pitus, despite the absence of information on their primary vascular anatomy. In the context of continuing work on the diversity of Late Devonian and Mississippian floras of Gondwana, we studied new silicified woods with secondary xylem simi ...
DOI:
10.1016/j.revpalbo.2019.01.009

11. New occurrence of Triassic gymnosperm wood at the Ricker Hills, southern Victoria Land, Antarctica

Author:
Oh, Changhwan; Lee, Jae Hyuk; Woo, Jusun; Lee, Jong Ik
Source:
Review of palaeobotany and palynology 2019 v.261 pp. 95-102
ISSN:
0034-6667
Subject:
Gymnospermae,   etc   ; Triassic period; basins; forests; old and fossil wood; sandstone; summer; trees; Antarctic region; Antarctica; Korean Peninsula;     Show all 11 Subjects
Abstract:
... During the 2016 Antarctic summer season, the fourth Korea Antarctic Geological Expedition (KAGEX IV) investigated the Ricker Hills in southern Victoria Land, Antarctica and collected 33 specimens of fossil wood from an outcrop of Triassic Beacon sandstone in a small basin, Ricker Hills area. Based on anatomical features, four specimens can be identified as belonging to the seed-fern wood Kykloxylo ...
DOI:
10.1016/j.revpalbo.2018.11.006

12. Microbial β-mannosidases and their industrial applications

Author:
Costa, Diandra Albuquerque Lopes; Filho, Edivaldo Ximenes Ferreira
Source:
Applied microbiology and biotechnology 2019 v.103 no.2 pp. 535-547
ISSN:
0175-7598
Subject:
Gymnospermae,   etc   ; Arecaceae; beta-mannosidase; bioenergy industry; carbon; cell walls; glycosylation; hydrolysis; industrial applications; mannans; mannose; pH; synergism; temperature;     Show all 14 Subjects
Abstract:
... Heteropolymers of mannan are polysaccharide components of the plant cell wall of gymnosperms and some angiosperms, including palm trees (Arecales and Monocot). Degradation of the complex structure of these polysaccharides requires the synergistic action of enzymes that disrupt the internal carbon skeleton of mannan and accessory enzymes that remove side chain substituents. However, complete degrad ...
DOI:
10.1007/s00253-018-9500-9

13. Leaf wax n-alkane distributions across plant types in the central Chinese Loess Plateau

Author:
Liu, Jinzhao; An, Zhisheng; Liu, Hu
Source:
Organic geochemistry 2018 v.125 pp. 260-269
ISSN:
0146-6380
Subject:
Gymnospermae,   etc   ; Liliopsida; Magnoliopsida; alkanes; leaves; paleoecology; terrestrial ecosystems; China;     Show all 8 Subjects
Abstract:
... Terrestrial ecosystems generally contain various plant types (e.g. dicots, monocots, gymnosperms), and an evaluation of the dominant plant type in an ecosystem is the key to understanding geological records in paleoenvironmental research. In this study, we examined n-alkane chain length distributions in terrestrial higher plants in the central Chinese Loess Plateau, and found that average chain le ...
DOI:
10.1016/j.orggeochem.2018.09.006

14. Commentary: seed bacterial inhabitants and their routes of colonization

Author:
Rodríguez, CarolinaEscobar; Mitter, Birgit; Barret, Matthieu; Sessitsch, Angela; Compant, Stéphane
Source:
Plant and soil 2018 v.422 no.1-2 pp. 129-134
ISSN:
0032-079X
Subject:
Gymnospermae,   etc   ; bacteria; grains; niches; plant tissues; seeds; soil;     Show all 7 Subjects
Abstract:
... BACKGROUND: Seeds host bacterial inhabitants but only a limited knowledge is available on which taxa inhabit seed, which niches could be colonized, and what the routes of colonization are. SCOPE: Within this commentary, a discussion is provided on seed bacterial inhabitants, their taxa, and from where derive the seed colonizers. CONCLUSIONS: Seeds/and grains host specific bacteria deriving from th ...
DOI:
10.1007/s11104-017-3368-9

15. High-resolution melting of multiple barcode amplicons for plant species authentication

Author:
Ballin, Nicolai Zederkopff; Onaindia, Jone Omar; Jawad, Hadeel; Fernandez-Carazo, Rafael; Maquet, Alain
Source:
Food control 2019 v.105 pp. 141-150
ISSN:
0956-7135
Subject:
Gymnospermae,   etc   ; DNA; DNA barcoding; Lamiaceae; Marchantiophyta; Solanaceae; cultivars; fraud; genetic variation; herbs; melting; mosses and liverworts; multivariate analysis; nucleotide sequences; polymerase chain reaction; species identification;     Show all 16 Subjects
Abstract:
... In recent years, species identification in herbs has attracted considerable attention due to several cases of fraud; hence inexpensive high-throughput authentication methods are highly welcomed. Species authentication is often performed through DNA analysis and several specific regions (barcodes) are considered suitable. Each barcode (Bar) possesses different qualities in terms of universality and ...
DOI:
10.1016/j.foodcont.2019.05.022

16. Phylogenetic diversity patterns in forests of a putative refugial area in Greece: A community level analysis

Author:
Mastrogianni, Anna; Kallimanis, Athanasios S.; Chytrý, Milan; Tsiripidis, Ioannis
Source:
Forest ecology and management 2019 v.446 pp. 226-237
ISSN:
0378-1127
Subject:
Gymnospermae,   etc   ; Fagus; Pleistocene epoch; coniferous forests; databases; environmental factors; ferns and fern allies; flora; forest habitats; genetic distance; phylogeny; rain forests; refuge habitats; temperate forests; Greece;     Show all 15 Subjects
Abstract:
... Patterns of phylogenetic diversity and structure of flora in refugial areas may be very complex due to habitat heterogeneity and legacies of various historical processes. Revealing these patterns can help understand the nature of the refugia. Here we study phylogenetic patterns of the flora in one of the main putative Pleistocene refugia of temperate forest biota in Europe through a community-leve ...
DOI:
10.1016/j.foreco.2019.05.044

17. Biomarker signatures of Upper Cretaceous Latrobe Group petroleum source rocks, Gippsland Basin, Australia: Distribution and geological significance of aromatic hydrocarbons

Author:
Jiang, Lian; George, Simon C.
Source:
Organic geochemistry 2019
ISSN:
0146-6380
Subject:
Gymnospermae,   etc   ; Angiospermae; Cretaceous period; basins; biomarkers; burning; embryophytes; gas chromatography-mass spectrometry; maturity stage; paleoclimatology; petroleum; polycyclic aromatic hydrocarbons; rocks; Australia;     Show all 14 Subjects
Abstract:
... Aromatic hydrocarbons extracted from Upper Cretaceous (Maastrichtian and Campanian) Latrobe Group coaly shales and shales from the Gippsland Basin were investigated by gas chromatography–mass spectrometry. A variety of 2-ring to 6-ring aromatic hydrocarbons were identified, including both higher-plant-derived and combustion-derived polycyclic aromatic hydrocarbons (PAHs). These aromatic compounds ...
DOI:
10.1016/j.orggeochem.2019.103905

18. A new Protophyllocladoxylon wood from the Induan (Lower Triassic) Jiucaiyuan Formation in the Turpan–Hami Basin, southern Bogda Mountains, northwestern China

Author:
Wan, Mingli; Yang, Wan; Wang, Jun
Source:
Review of palaeobotany and palynology 2019 v.267 pp. 62-72
ISSN:
0034-6667
Subject:
Gymnospermae,   etc   ; Calcisols; Triassic period; Wuchiapingian age; basins; climate; conifers; fossils; growth rings; landscapes; mountains; new species; old and fossil wood; tracheids; China;     Show all 15 Subjects
Abstract:
... A silicified gymnospermous wood, Protophyllocladoxylon zhaobishanensis sp. nov., is described from the Induan (Lower Triassic) Jiucaiyuan Formation in Zhaobishan section, Shanshan County, southern Bogda Mountains, Xinjiang Uygur Autonomous Region, northwestern China. The pycnoxylic wood contains thick-walled tracheids and parenchymatous ray cells. It is characterized by uni- to triseriate araucari ...
DOI:
10.1016/j.revpalbo.2019.05.005

19. Comparative study on floristic diversity of protected and unprotected Forests of Sathan Gali, District Mansehra, KP, Pakistan

Author:
Khan, Khalid Rasheed; Iqbal, Zafar; Alam, Jan; Farooq, Muhammad; Shah, Abbas Hussain; Hussain, Manzoor; Shah, Ghulam Mujaba; Ali, Danish
Source:
Acta ecologica Sinica 2019 v.39 no.4 pp. 273-279
ISSN:
1872-2032
Subject:
Gymnospermae,   etc   ; Asteraceae; Poaceae; Polygonaceae; Pteridaceae; Rosaceae; botanical composition; ferns and fern allies; forest types; herbaria; herbs; issues and policy; shrubs; trees; Himalayan region; Pakistan;     Show all 16 Subjects
Abstract:
... This first ever study was carried out to explore the floristic composition of protected and unprotected forests of Sathan Gali, District Mansehra, KP, Pakistan. The study area being the part of the Western Himalayas harbours rich floristic diversity. In the current investigation, an effort was made to record primary data about floral diversity of the area. The study area was visited recurrently du ...
DOI:
10.1016/j.chnaes.2018.09.016

20. Lignin loss under AD in monocot and gymnosperm biomass

Author:
Malayil, Sreesha; Chanakya, H.N.
Source:
Environmental technology & innovation 2019 pp. 100436
ISSN:
2352-1864
Subject:
Gymnospermae,   etc   ; Fourier transform infrared spectroscopy; Liliopsida; biodegradation; biogas; biomass; cell walls; environmental technology; ethanol production; feedstocks; gas production (biological); lignin; methane production; prediction; vascular bundles;     Show all 15 Subjects
Abstract:
... Lignin degradation in digesting biomass substrates of monocot and gymnosperm feedstocks fed into a biogas plant was studied and is reported for the first time with significant implications on biomethanation and bioethanol production. Around 0.013g/gTS/d lignin loss in monocots and 0.007g/gTS/d in gymnosperms was achieved during 30d. In the case of monocots the lignin degraded from substrate was fo ...
DOI:
10.1016/j.eti.2019.100436