Drought stress revealed physiological, biochemical and gene-expressional variations in ‘Yoshihime’ peach (Prunus Persica L) cultivar

Abstract

It is indispensable to comprehend the mechanism that regulates plant responses to drought conditions to intensify the water use efficiency of stone fruits. The physiological, biochemical and molecular responses of drought-treated peach leaves were investigated. Results revealed that drought-treated plants manifested a significant attenuation in water potential as compared to control plants. Furthermore, sorbitol and proline contents were accumulated contrary to glucose, fructose, and sucrose that were dwindled significantly throughout the drought period. Similarly, the activities of antioxidant enzymes and expression pattern of related genes were hoisted to counter the lipid peroxidation in drought-treated plants. Moreover, reduced stomatal conductance has repressed the photosynthesis process and linked genes during drought stress. The expression level of regulatory genes (dehydration-responsive element-bindings and WRKYs) exhibited up-regulation in the drought-treated group. Overall, this study asserts that 'Yoshihime' peach cultivar possesses unique physiological, biochemical, and molecular responses under different spells of drought stress.

Transcriptome Profiling, Biochemical and Physiological Analyses Provide New Insights towards Drought Tolerance in Nicotiana tabacum L.

“…It affects the production of both rain-fed and irrigated crops. As plants are sessile in nature, they respond to drought stress in a series of processes at physiological, biochemical and molecular level, allowing them to escape or adapt to unfavorable conditions [4,5]. Furthermore, drought impairs nutrient uptake and transport, inhibits photosynthesis, loss of cell turgidity and accumulation of reactive oxygen species, crop growth and productivity and in extreme cases crop failure [6,7].…”

Aluminium Fluoride induced changes in chlorophyllafluorescence, antioxidants andpsbA gene expression ofBrassica junceacultivars

“…Variation in the chlorophyll a fluorescence parameters and photosynthetic pigment levels of selected cultivars (Bio-902, CS-14, Pusa-Tarak and Laxmi) may be due to the intrinsic differences between the cultivars. It can be assumed from our results that the reduction in photosynthetic performance of all the cultivars is due to the damage of photosynthetic machinery (PSI and PSII) (Mittal et al 2012) or due to deviation of biochemical processes involving in PSII reaction centers or due to decline in the catalytic activity of Rubisco or due to inhibition of chlorophyll synthesis as it is a key component of photosynthesis in plants (Batra et al 2014;Haider et al 2018). The elevation in temperature also results in reduced maximal quantum yield (PSII) of plants (Hasanuzzaman et al 2013) such as tomato (Morales et al 2003), Populus (Ferreira et al 2006) and rice (Han et al 2009;Vani et al 2001).…”

“…However, APX has higher scavenging affinity for H 2 O 2 in comparison to CAT (Chalanika de silva and Asaeda 2017). A significant increase is observed in the activities of ROS enzymes (SOD, POD, CAT, GPX and APX) with respect to abiotic stress (Haider et al 2018;Vardharajulaet al 2011). In this study, each cultivar of Brassica juncea also showed a continuous rise in antioxidant activity.…”

Nutritional Efficiency and Morphophysiological Aspects With Growth in the ‘Okinawa Roxo’ Peach Rootstock

“…According to Souza et al (2015), the ideal range for total N content in peach seedlings is from 509.94 to 617.24 (mg plant -1 ), which agrees with the present research. Perennial fruit species of the genus Prunus, such as the peach tree [Prunus persica L. (Basthc)], accumulate N in the form of free proteins or amino acids, as well as non-structural carbohydrates that include starch and soluble sugars (sucrose, glucose, fructose and sorbitol) (Haider et al, 2018). Such molecules play an essential role in vegetative growth, providing structural components for the formation of new cells and consequently maximum biomass production.…”