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Filename: controllers/Detail.php
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File: /var/www/html/application/controllers/Detail.php
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File: /var/www/html/index.php
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Filename: controllers/Detail.php
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Land plants are considered monophyletic, descending from a single successful colonization of land by an aquatic algal ancestor. The ability to survive dehydration to the point of desiccation is a key adaptive trait enabling terrestrialization. In extant land plants, desiccation tolerance depends on the action of the hormone abscisic acid (ABA) that acts through a receptor-signal transduction pathway comprising a PYRABACTIN RESISTANCE 1-like (PYL)-PROTEIN PHOSPHATASE 2C (PP2C)-SNF1-RELATED PROTEIN KINASE 2 (SnRK2) module. Early-diverging aeroterrestrial algae mount a dehydration response that is similar to that of land plants, but that does not depend on ABA: Although ABA synthesis is widespread among algal species, ABA-dependent responses are not detected, and algae lack an ABA-binding PYL homolog. This raises the key question of how ABA signaling arose in the earliest land plants. Here, we systematically characterized ABA receptor-like proteins from major land plant lineages, including a protein found in the algal sister lineage of land plants. We found that the algal PYL-homolog encoded by has basal, ligand-independent activity of PP2C repression, suggesting this to be an ancestral function. Similarly, a liverwort receptor possesses basal activity, but it is further activated by ABA. We propose that co-option of ABA to control a preexisting PP2C-SnRK2-dependent desiccation-tolerance pathway enabled transition from an all-or-nothing survival strategy to a hormone-modulated, competitive strategy by enabling continued growth of anatomically diversifying vascular plants in dehydrative conditions, enabling them to exploit their new environment more efficiently.
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http://dx.doi.org/10.1073/pnas.1914480116 | DOI Listing |
AbstractClimate change will affect both the mean and the variability in environmental conditions and may have major negative impacts on population densities in the future. For annual plants that already live in an extreme environment like the Sonoran Desert, keeping a fraction of their seeds dormant underground (for possibly years at a time) is critical to survive. Here, we consider how this form of bet hedging (i.
View Article and Find Full Text PDFMol Biol Rep
December 2024
ICAR - Indian Institute of Pulses Research, Regional Station, Khordha, 752055, India.
Background: Charcoal Rot (CR) poses a significant threat to mung bean crops by reducing yield, making the development of resistant varieties crucial for stable production and food security. This study evaluated 19 newly identified mung bean landraces using biochemical traits and SSR markers, revealing genetic variability, CR disease reactions, and traits influencing yield and resistance, which provide valuable insights for breeding CR-resistant, high-yielding varieties.
Methods And Results: Mung bean landraces were evaluated for their response to CR using 4 biochemical parameters, and 10 SSR markers to assess genetic variability and disease resistance.
Antonie Van Leeuwenhoek
December 2024
GIPhy - Genome Informatics and Phylogenetics, Biological Resource Center of Institut Pasteur, Institut Pasteur, Université de Paris, 75015, Paris, France.
A Gram-staining-positive, aerobic bacterium, designated strain JJ-181, was isolated from the root surface of soybean. Based on the 16S rRNA gene sequence similarities, strain JJ-181 was grouped into the genus Cohnella, most closely related to Cohnella hashimotonis F6_2S_P_1 (98.85%) and C.
View Article and Find Full Text PDFCurr Microbiol
December 2024
College of Agriculture and Life Sciences, Kunming University, 2 Pu Xin Road, Kunming, 650214, Yunnan, China.
β-Glucosidase plays a pivotal role in transforming ginsenosides into specific minor ginsenosides. In this study, total ginsenosides from Panax notoginseng leaves were used as substrates to stimulate the growth of Aspergillus niger NG1306. Transcriptome analysis identified a β-glucosidase gene, Anglu04478 (1455 bp, 484 amino acids, 54.
View Article and Find Full Text PDFTheor Appl Genet
December 2024
Division of Feed and Livestock Research, Institute of Livestock and Grassland Science, NARO, 768 Senbonmatsu, Nasushiobara, Tochigi, 329-2793, Japan.
We have identified a unique genetic locus for seed shattering in Italian ryegrass that has an exceedingly large effect and shows partial dominance for reduced seed shattering. Genetic improvement of seed retention in forage grasses can contribute to improving their commercial seed production. The objective of this study was to identify the genetic loci responsible for seed shattering in Italian ryegrass (Lolium multiflorum Lam.
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