Drought stress affects on growth, water use efficiency, gas exchange and chlorophyll fluorescence of Juglans rootstocks

Liu, Binghua; Liang, Jing; Tang, Guimin; Wang, Xiaofang; Liu, Fang‐Chun; Dang, Zhao

doi:10.1016/j.scienta.2019.02.056

Cited by 73 publications

(34 citation statements)

References 36 publications

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“…The foliar application of GABA @ 2mM was found more effective in increasing the levels of Chl a and Chl b in fresh leaves of carrot grown under 50% FC condition, compared to other two levels (1 mM, and 4 mM) while Supertaj cultivar was found more responsive to GABA application, compared to Bharat cv, in the present investigation. These results are coherent to the findings of previous studies carried out in various field and horticultural crops[57,[62][63][64][65].…”

supporting

confidence: 92%

Foliar Application of Y-Aminobutyric Acid (GABA) Improves Vegetative Growth, and the Physiological and Antioxidative Potential of Daucus Carota L. under Water Deficit Conditions

Bashir¹,

Hn²,

Shafiq³

et al. 2019

Preprint

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Scarcity of water is one of the most serious concerns in plant biology with diverse implications at all the levels of molecular, biochemical, and physiological phenomena of plant growth, development, and consequently the productivity. Most of the strategies to induce or enhance drought tolerance in plants are unreasonably expensive and/or time-consuming. Some studies conducted in the recent past have shown that plant growth regulators (PGRs) may induce/improve physiological tolerance in plants to cope with adverse environmental conditions including drought. The present study was aimed at investigating the effects of foliar spray of GABA (0, 1, 2, and 4 mM) applied 20 days following the germination of seeds, on vegetative growth, morphological characteristics, integrity of cell-membrane, and the levels of photosynthetic pigments and enzymatic antioxidants in carrot cvs. Supertaj and Bharat, grown under 100% and 50% field capacity of soil moisture. The treated and untreated (control) carrot plants were harvested and analyzed 2 weeks following the GABA application. The results revealed that foliar application of GABA improved the vegetative growth and significantly increased the levels of free amino acids, plastid pigments, enzymatic antioxidants, and the relative water content in the root crop grown under 50% field capacity of soil moisture, compared to control. Additionally, the GABA application decreased the electrolyte leakage of ions and melondialdehyde (MDA) content in carrot leaves. The carrots harvested from GABA-treated or untreated (control) plants were not significantly different for their protein contents. In conclusion, the incorporation of GABA in the production management of carrots may help plants to mitigate the adverse effects of water deficit stress.

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supporting

confidence: 92%

Foliar Application of Y-Aminobutyric Acid (GABA) Improves Vegetative Growth, and the Physiological and Antioxidative Potential of Daucus Carota L. under Water Deficit Conditions

Bashir¹,

Hn²,

Shafiq³

et al. 2019

Preprint

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“…This indicates an optimization of carbon uptake versus water loss, and the sharper reduction in gs shows that non-stomatal components could play an J o u r n a l P r e -p r o o f important role in limiting photosynthesis when plants undergo prolonged water deficit in the field (Earl, 2002). It has been suggested that gs could be used as an indicator of WUE under water-limited conditions (Gulías et al, 2012;Liu et al, 2019). In addition, as reported by Flexas et al (2014), the increase in intrinsic WUE is an adaptive strategy in Mediterranean plant species under drought stress conditions.…”

Section: J O U R N a L P R E -P R O O Fmentioning

confidence: 90%

Effect of drought on growth, photosynthesis and total antioxidant capacity of the saharan plant Oudeneya africana

Talbi

Rojas

Sahrawy

et al. 2020

Environmental and Experimental Botany

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Highlights Oudneya africana responds to drought by increasing instantaneous and intrinsic water use efficiency, indicating that photosynthetic limitations could be due to stomatal closure. O. africana has a high capacity to restore photosynthesis after re-watering  Polyphenols, flavonoids and total antioxidant capacity increased with increasing drought stress severity thus enabling the plant to survive under adverse environmental conditions

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“…In this study, iWUE was positively correlated with yield components under water deficit. The importance of iWUE for the identification of water-deficit-tolerant genotypes has been pointed out by a number of authors [52][53][54].…”

Section: Discussionmentioning

confidence: 99%

Effect of Water Deficit on Morphoagronomic and Physiological Traits of Common Bean Genotypes with Contrasting Drought Tolerance

Androcioli

Zeffa

Alves

et al. 2020

Water

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Water deficit is considered one of the most limiting factors of the common bean. Understanding the adaptation mechanisms of the crop to this stress is fundamental for the development of drought-tolerant cultivars. In this sense, the objective of this study was to analyze the influence of water deficit on physiological and morphoagronomic traits of common bean genotypes with contrasting drought tolerance, aiming to identify mechanisms associated with tolerance to water deficit. The experiment was carried out in a greenhouse, arranged in a randomized complete block 4 × 2 factorial design, consisting of four common bean genotypes under two water regimes (with and without water stress), with six replications. The morphoagronomic and physiological traits of four cultivars, two drought-tolerant (IAPAR 81 and BAT 477) and two drought-sensitive (IAC Tybatã and BRS Pontal), were measured for 0, 4, 8, and 12 days, under water deficit, initiated in the phenological stage R5. Water-deficit induced physiological changes in the plants, altering the evaluated morphoagronomic traits. The drought tolerance of cultivar BAT 477 is not only a direct result of the low influence of water deficit on its yield components, but also a consequence of the participation of multiple adaptive physiological mechanisms, such as higher intrinsic water use efficiency, net photosynthesis rate, transpiration, carboxylation efficiency, stomatal conductance, and intracellular concentration of CO2 under water deficit conditions. On the other hand, cultivar IAPAR 81 can be considered drought-tolerant for short water-deficit periods only, since after the eighth day of water deficit, the physiological activities decline drastically.

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Drought stress affects on growth, water use efficiency, gas exchange and chlorophyll fluorescence of Juglans rootstocks

Cited by 73 publications

References 36 publications

Foliar Application of Y-Aminobutyric Acid (GABA) Improves Vegetative Growth, and the Physiological and Antioxidative Potential of Daucus Carota L. under Water Deficit Conditions

Foliar Application of Y-Aminobutyric Acid (GABA) Improves Vegetative Growth, and the Physiological and Antioxidative Potential of Daucus Carota L. under Water Deficit Conditions

Effect of drought on growth, photosynthesis and total antioxidant capacity of the saharan plant Oudeneya africana

Effect of Water Deficit on Morphoagronomic and Physiological Traits of Common Bean Genotypes with Contrasting Drought Tolerance

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