scholarly journals Regulation of antioxidant mechanisms by AtDREB1A improves soil-moisture deficit stress tolerance in transgenic peanut (Arachis hypogaea L.)

PLoS ONE ◽  
2019 ◽  
Vol 14 (5) ◽  
pp. e0216706 ◽  
Author(s):  
Hiren Bhalani ◽  
Radhakrishnan Thankappan ◽  
Gyan P. Mishra ◽  
Tanmoy Sarkar ◽  
Tejas C. Bosamia ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Stress Tolerance ◽  
Arachis Hypogaea ◽  
Soil Moisture Deficit ◽  
Arachis Hypogaea L ◽  
Moisture Deficit ◽  
Antioxidant Mechanisms ◽  
Moisture Deficit Stress ◽  
Transgenic Peanut

scholarly journals Preliminary Variations in Physiological Modules When <i>sub</i>1<i>A</i> QTL Is under Soil-Moisture Deficit Stress

2018 ◽  
Vol 09 (04) ◽  
pp. 732-744 ◽  
Author(s):  
Indraneel Saha ◽  
Arnab Kumar De ◽  
Arijit Ghosh ◽  
Bipul Sarkar ◽  
Narottam Dey ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Soil Moisture Deficit ◽  
Moisture Deficit ◽  
Moisture Deficit Stress

Physiological traits reveal potential for identification of drought tolerant mungbean [Vigna radiata (L.) Wilczek] genotypes under moderate soil-moisture deficit

2019 ◽  
Vol 79 (02) ◽  
Author(s):  
Susheel Kumar Raina ◽  
Jagadish Rane ◽  
Nikhil Raskar ◽  
Ajay Kumar Singh ◽  
Ajay Kumar Singh ◽  
...  
Keyword(s):  
Soil Moisture ◽  
Drought Tolerance ◽  
Canopy Temperature ◽  
Root Traits ◽  
Stress Conditions ◽  
Plant Performance ◽  
Root Weight ◽  
Soil Moisture Deficit ◽  
Moisture Deficit ◽  
Moisture Deficit Stress

Canopy temperature is an important physiological trait used for screening drought tolerance in several crop plants. Mungbean being often exposed to post-flowering drought,we evaluated a set of 48 genotypes for variability in post-flowering canopy temperature and its association with root traits and other physiological parameters contributing to drought tolerance under soil-moisture deficit stress conditions. Overall, canopy temperature depression revealed significant association with seed yield. Root traits like number of lateral branches and dry root weight exhibited significant negative correlation with canopy temperature. Leaf SPAD readings were positively associated with grain yield and most of the high SPAD genotypes maintained hot canopies under drought. Some genotypes with contrasting variation in SPAD levels (DMG-1050 and SML-1628) maintained their photosystem PSII health at par. Moreover, cool canopy was no guarantee for better PSII health or vice versa. This study identified some cool canopy genotypes (VC-6173-C, IC-325770 and ML-2082) and a genotype (DMG-1050) with novel trait combinations like high SPAD and better PSII health despite high canopy temperature which can be used as donors in mungbean breeding programs. Present study explores genetic variation in these adaptation traits contributing to plant performance under soil-moisture deficit stress conditions and potential of physiological breeding approaches for genetic enhancement of this legume crop.

scholarly journals Arbuscular Mycorrhizal Fungi Regulate Polyamine Homeostasis in Roots of Trifoliate Orange for Improved Adaptation to Soil Moisture Deficit Stress

2021 ◽  
Vol 11 ◽  
Author(s):  
Ying-Ning Zou ◽  
Fei Zhang ◽  
Anoop K. Srivastava ◽  
Qiang-Sheng Wu ◽  
Kamil Kuča
Keyword(s):  
Soil Moisture ◽  
Arbuscular Mycorrhizal Fungi ◽  
Mycorrhizal Fungi ◽  
Arbuscular Mycorrhizal ◽  
Trifoliate Orange ◽  
Soil Moisture Deficit ◽  
Degrading Enzymes ◽  
Moisture Deficit ◽  
Mycorrhizal Plants ◽  
Moisture Deficit Stress

Soil arbuscular mycorrhizal fungi (AMF) enhance the tolerance of plants against soil moisture deficit stress (SMDS), but the underlying mechanisms are still not fully understood. Polyamines (PAs) as low-molecular-weight, aliphatic polycations have strong roles in abiotic stress tolerance of plants. We aimed to investigate the effect of AMF (Funneliformis mosseae) inoculation on PAs, PA precursors, activities of PA synthases and degrading enzymes, and concentration of reactive oxygen species in the roots of trifoliate orange (Poncirus trifoliata) subjected to 15 days of SMDS. Leaf water potential and total chlorophyll levels were comparatively higher in AMF-inoculated than in non-AMF-treated plants exposed to SMDS. Mycorrhizal plants recorded a significantly higher concentration of precursors of PA synthesis such as L-ornithine, agmatine, and S-adenosyl methionine, besides higher putrescine and cadaverine and lower spermidine during the 15 days of SMDS. AMF colonization raised the PA synthase (arginine decarboxylase, ornithine decarboxylase, spermidine synthase, and spermine synthase) activities and PA-degrading enzymes (copper-containing diamine oxidase and FAD-containing polyamine oxidase) in response to SMDS. However, mycorrhizal plants showed a relatively lower degree of membrane lipid peroxidation, superoxide anion free radical, and hydrogen peroxide than non-mycorrhizal plants, whereas the difference between them increased linearly up to 15 days of SMDS. Our study concluded that AMF regulated PA homeostasis in roots of trifoliate orange to tolerate SMDS.

Ozone and Soil Moisture Deficit Effects on Nitrogen Metabolism of Soybean 1

Crop Science ◽  
1987 ◽  
Vol 27 (6) ◽  
pp. 1177-1184 ◽  
Author(s):  
R. B. Flagler ◽  
R. P. Patterson ◽  
A. S. Heagle ◽  
W. W. Heck
Keyword(s):  
Soil Moisture ◽  
Nitrogen Metabolism ◽  
Soil Moisture Deficit ◽  
Moisture Deficit
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