Response of chickpea (<i>Cicer arietinum</i>L.) to terminal drought: leaf stomatal conductance, pod abscisic acid concentration, and seed set

Pang, Jiayin; Turner, Neil C.; Khan, Tanveer; Du, Yongmei; Xiong, Jie; Colmer, Timothy D.; Devilla, Rosangela; Stefanova, Katia; Siddique, Kadambot H. M.

doi:10.1093/jxb/erw153

Cited by 73 publications

(97 citation statements)

References 29 publications

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“…It is worth noting that the percentage of decrease in dry weights was significantly higher for the sensitive variety. Earlier studies demonstrated significant reduction in shoot dry weights when grown under drought conditions in chickpea (Pang et al, ) and in corn (Anjum et al, ). Silvente, Sobolev, and Lara () attributed the decrease in dry weight under drought in the sensitive soybean variety to the depletion of sucrose in the leaves of this variety.…”

Section: Discussionmentioning

confidence: 94%

UPLC‐HRMS‐based untargeted metabolic profiling reveals changes in chickpea (Cicer arietinum) metabolome following long‐term drought stress

Khan

Bano

Rahman

et al. 2018

Plant Cell & Environment

213

127

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Genetic improvement for drought tolerance in chickpea requires a solid understanding of biochemical processes involved with different physiological mechanisms. The objective of this study is to demonstrate genetic variations in altered metabolic levels in chickpea varieties (tolerant and sensitive) grown under contrasting water regimes through ultrahigh-performance liquid chromatography/high-resolution mass spectrometry-based untargeted metabolomic profiling. Chickpea plants were exposed to drought stress at the 3-leaf stage for 25 days, and the leaves were harvested at 14 and 25 days after the imposition of drought stress. Stress produced significant reduction in chlorophyll content, F /F , relative water content, and shoot and root dry weight. Twenty known metabolites were identified as most important by 2 different methods including significant analysis of metabolites and partial least squares discriminant analysis. The most pronounced increase in accumulation due to drought stress was demonstrated for allantoin, l-proline, l-arginine, l-histidine, l-isoleucine, and tryptophan. Metabolites that showed a decreased level of accumulation under drought conditions were choline, phenylalanine, gamma-aminobutyric acid, alanine, phenylalanine, tyrosine, glucosamine, guanine, and aspartic acid. Aminoacyl-tRNA and plant secondary metabolite biosynthesis and amino acid metabolism or synthesis pathways were involved in producing genetic variation under drought conditions. Metabolic changes in light of drought conditions highlighted pools of metabolites that affect the metabolic and physiological adjustment in chickpea that reduced drought impacts.

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Section: Discussionmentioning

confidence: 94%

UPLC‐HRMS‐based untargeted metabolic profiling reveals changes in chickpea (Cicer arietinum) metabolome following long‐term drought stress

Khan

Bano

Rahman

et al. 2018

Plant Cell & Environment

213

127

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“…Chickpea is the third most important grain legume (pulse) globally and the largest pulse crop in Australia (FAOSTAT, 2016). It is a primary crop in several developing countries, contributing significantly to human food and animal feed (Foyer et al, 2016;Pang et al, 2017b). In countries such as India, a substantial area of chickpea is grown on marginal and submarginal lands with limited P availability, and P deficiency is one of the major constraints to increasing chickpea productivity (Srinivasarao et al, 2006).…”

Section: Introductionmentioning

confidence: 99%

The carboxylate‐releasing phosphorus‐mobilizing strategy can be proxied by foliar manganese concentration in a large set of chickpea germplasm under low phosphorus supply

et al. 2018

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Summary Root foraging and root physiology such as exudation of carboxylates into the rhizosphere are important strategies for plant phosphorus (P) acquisition. We used 100 chickpea (Cicer arietinum) genotypes with diverse genetic backgrounds to study the relative roles of root morphology and physiology in P acquisition. Plants were grown in pots in a low‐P sterilized river sand supplied with 10 μg P g−1 soil as FePO4, a poorly soluble form of P. There was a large genotypic variation in root morphology (total root length, root surface area, mean root diameter, specific root length and root hair length), and root physiology (rhizosheath pH, carboxylates and acid phosphatase activity). Shoot P content was correlated with total root length, root surface area and total carboxylates per plant, particularly malonate. A positive correlation was found between mature leaf manganese (Mn) concentration and carboxylate amount in rhizosheath relative to root DW. This is the first study to demonstrate that the mature leaf Mn concentration can be used as an easily measurable proxy for the assessment of belowground carboxylate‐releasing processes in a range of chickpea genotypes grown under low‐P, and therefore offers an important breeding trait, with potential application in other crops.

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“…Our finding is accordance with those of Ahmed et al (2013) and Liu et al (2015) observed reduction in water potential when crop was imposed under drought environment. Water stressed plants showed a significant reduction in leaf water potential than non-water stressed plants (Pang et al 2016).…”

Section: Water Potential (-Mpa)mentioning

confidence: 88%

Effect of Restricted Irrigation on Water Relation Traits and Antioxidant Activity

Kumar¹,

Ram²,

na³

et al. 2018

Int.J.Curr.Microbiol.App.Sci

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Response of chickpea (Cicer arietinumL.) to terminal drought: leaf stomatal conductance, pod abscisic acid concentration, and seed set

Abstract: HighlightExposed to terminal drought, the soil water content at which chickpea seed set ceased coincided with that at which stomatal conductance began to decrease and pod abscisic acid concentration increased.

Cited by 73 publications

References 29 publications

UPLC‐HRMS‐based untargeted metabolic profiling reveals changes in chickpea (Cicer arietinum) metabolome following long‐term drought stress

UPLC‐HRMS‐based untargeted metabolic profiling reveals changes in chickpea (Cicer arietinum) metabolome following long‐term drought stress

The carboxylate‐releasing phosphorus‐mobilizing strategy can be proxied by foliar manganese concentration in a large set of chickpea germplasm under low phosphorus supply

Effect of Restricted Irrigation on Water Relation Traits and Antioxidant Activity

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