scholarly journals The role of active oxygen in the response of plants to water deficit and desiccation

1993 ◽  
Vol 125 (1) ◽  
pp. 27-58 ◽  
Author(s):  
NICHOLAS SMIRNOFF
Keyword(s):  
Water Deficit ◽  
Active Oxygen

Role of Active Oxygen in Paraquat and 1-Methyl-4-phenyl-1,2,3,6-Tetrahydropyridine (MPTP) Cytotoxicity

1988 ◽  
pp. 795-801
Author(s):  
Martha S. Sandy ◽  
Donato Di Monte ◽  
Phyllis Cohen ◽  
Martyn T. Smith
Keyword(s):  
Active Oxygen

The role of inorganic phosphate on photosynthesis recovery of common bean after a mild water deficit

Plant Science ◽  
2006 ◽  
Vol 170 (3) ◽  
pp. 659-664 ◽  
Author(s):  
Mauro Guida dos Santos ◽  
Rafael Vasconcelos Ribeiro ◽  
Ricardo Ferraz de Oliveira ◽  
Eduardo Caruso Machado ◽  
Carlos Pimentel
Keyword(s):  
Common Bean ◽  
Water Deficit ◽  
Inorganic Phosphate

scholarly journals Expression Characterization of Flavonoid Biosynthetic Pathway Genes and Transcription Factors in Peanut Under Water Deficit Conditions

2021 ◽  
Vol 12 ◽  
Author(s):  
Ghulam Kubra ◽  
Maryam Khan ◽  
Faiza Munir ◽  
Alvina Gul ◽  
Tariq Shah ◽  
...  
Keyword(s):  
Transcription Factors ◽  
Water Deficit ◽  
Biosynthetic Pathway ◽  
Correlational Analysis ◽  
Accumulation Pattern ◽  
Yield Production ◽  
Expression Of Genes ◽  
Flavonoid Biosynthetic Pathway ◽  
Wide Range

Drought is one of the hostile environmental stresses that limit the yield production of crop plants by modulating their growth and development. Peanut (Arachis hypogaea) has a wide range of adaptations to arid and semi-arid climates, but its yield is prone to loss due to drought. Other than beneficial fatty acids and micronutrients, peanut harbors various bioactive compounds including flavonoids that hold a prominent position as antioxidants in plants and protect them from oxidative stress. In this study, understanding of the biosynthesis of flavonoids in peanut under water deficit conditions was developed through expression analysis and correlational analysis and determining the accumulation pattern of phenols, flavonols, and anthocyanins. Six peanut varieties (BARD479, BARI2011, BARI2000, GOLDEN, PG1102, and PG1265) having variable responses against drought stress have been selected. Higher water retention and flavonoid accumulation have been observed in BARI2011 but downregulation has been observed in the expression of genes and transcription factors (TFs) which indicated the maintenance of normal homeostasis. ANOVA revealed that the expression of flavonoid genes and TFs is highly dependent upon the genotype of peanut in a spatiotemporal manner. Correlation analysis between expression of flavonoid biosynthetic genes and TFs indicated the role of AhMYB111 and AhMYB7 as an inhibitor for AhF3H and AhFLS, respectively, and AhMYB7, AhTTG1, and AhCSU2 as a positive regulator for the expression of Ah4CL, AhCHS, and AhF3H, respectively. However, AhbHLH and AhGL3 revealed nil-to-little relation with the expression of flavonoid biosynthetic pathway genes. Correlational analysis between the expression of TFs related to the biosynthesis of flavonoids and the accumulation of phenolics, flavonols, and anthocyanins indicated coregulation of flavonoid synthesis by TFs under water deficit conditions in peanut. This study would provide insight into the role of flavonoid biosynthetic pathway in drought response in peanut and would aid to develop drought-tolerant varieties of peanut.

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