Lignin deposition in chickpea root xylem under drought

Sharma, Nilesh Kumar; Gupta, Santosh Kumar; Dwivedi, Vikas; Chattopadhyay, Debasis

doi:10.1080/15592324.2020.1754621

Cited by 32 publications

(22 citation statements)

References 15 publications

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“…It may be because of the reasons that under rainfed water shortage diminished the rate of photosynthetic tracked by hindering the fertilization hindrance and shedding of the flower. Similar findings were also observed (Waqas et al, 2019;Sharma et al, 2020).…”

Section: Drought Tolerance Efficiency Harvest Index and Percent Reduction Yieldsupporting

confidence: 88%

Evaluation and Screening of Promising Drought Tolerant Chickpea (Cicer arietinum L.) Genotypes Based on Physiological and Biochemical Attributes Under Drought Conditions

Jan¹,

Haq²,

Sattar³

et al. 2020

PJAR

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D rought effects are commonly related to the agriculture and water resource sectors. They may cause substantial economic losses in the agriculture sector of developed countries through reductions in crop yield or total failure of crops (Sweet et al., 2017;Tian et al., 2018). Under certain circumstances they can also cause human migration and famine in developing countries (Gray and Mueller, 2012; Abstract | Extreme climatic conditions like heat waves, dry spell, sustained drought and precipitation adversely reducing the crop productivity and these are considered as an alarming issue for the crop production in rainfed areas. Chick pea is deemed to be regarded as a drought sensitive crop. The low water and fertilizer demand and its ability to grow on marginal land is an excellent choice for the farming community. The field trial was conducted with the aspect to screen out the drought-tolerant variety of chick pea keeping in view the physiological and biochemical attributes under drought conditions. Drought stress adversely reduced the vegetative growth in term of primary branches, secondary branches and pod yield. Based on biochemical, morphological and physiological parameters a significant difference was observed among the genotypes. Out of twenty-five genotypes, three chick pea genotypes i-e chick pea genotypes GGP1260, GGP1426 and PB01 shown the best drought tolerance efficiency (83.78, 84.21 and 81.57%), harvest index (83.23, 84.06, and 81.14%) and minimum reduction in pod yield (16.21, 15.78 and 18.42%) under rainfed controlled conditions. Under rainfed condition the activity of all enzymes increased among all genotypes. The chick pea genotypes, GGP-1260, PGP-1426 and PB-1 were observed as drought-tolerant ones on the basis of biochemical, morphological and physiological parameters and these can be recommended for rain-fed areas crop selection.

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Section: Drought Tolerance Efficiency Harvest Index and Percent Reduction Yieldsupporting

confidence: 88%

Evaluation and Screening of Promising Drought Tolerant Chickpea (Cicer arietinum L.) Genotypes Based on Physiological and Biochemical Attributes Under Drought Conditions

Jan¹,

Haq²,

Sattar³

et al. 2020

PJAR

View full text Add to dashboard Cite

show abstract

“…Lignin deposition is widely reported to enhance drought tolerance by forming a water-resistant barrier around mature xylem tissue ( Xu et al, 2017 ; Liu et al, 2018 ; Sharma et al, 2020 ). Interestingly, mutants overexpressing lignin biosynthesis genes often additionally show longer PRs ( Li et al, 2020 ; Xu et al, 2020 ).…”

Section: Tropisms and Root Branchingmentioning

confidence: 99%

Root plasticity under abiotic stress

et al. 2021

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Abiotic stresses increasingly threaten existing ecological and agricultural systems across the globe. Plant roots perceive these stresses in the soil and adapt their architecture accordingly. This review provides insights into recent discoveries showing the importance of root system architecture and plasticity for the survival and development of plants under heat, cold, drought, salt, and flooding stress. In addition, we review the molecular regulation and hormonal pathways involved in controlling root system architecture plasticity, main root growth, branching and lateral root growth, root hair development and formation of adventitious roots. Several stresses affect root anatomy by causing aerenchyma formation, lignin and suberin deposition, and Casparian strip modulation. Roots can also actively grow towards favourable soil conditions and avoid environments detrimental to their development. Recent advances in understanding the cellular mechanisms behind these different root tropisms are discussed. Understanding root plasticity will be instrumental for the development of crops that are resilient in the face of abiotic stress.

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“…In the root xylem of chickpea, LACCASE family enzymes are usually involved in reducing lignin deposition. Importantly, under drought stress, the LACCASE2 gene was observed to be downregulated by miR397b so that lignin deposition can be accelerated as a survival strategy (Sharma et al, 2020). In wheat plants, lignin deposition was observed to be enhanced by SYRINGALDAZINE PEROXIDASE via speeding up the polyamine degradation process upon drought (Bala et al, 2016).…”

Section: Lignin In Drought Stressmentioning

confidence: 99%

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

Jogawat

Yadav

Chhaya

et al. 2021

Physiologia Plantarum

244

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Drought stress negatively affects crop performance and weakens global food security. It triggers the activation of downstream pathways, mainly through phytohormones homeostasis and their signaling networks, which further initiate the biosynthesis of secondary metabolites (SMs). Roots sense drought stress, the signal travels to the above-ground tissues to induce systemic phytohormones signaling. The systemic signals further trigger the biosynthesis of SMs and stomatal closure to prevent water loss. SMs primarily scavenge reactive oxygen species (ROS) to protect plants from lipid peroxidation and also perform additional defense-related functions.Moreover, drought-induced volatile SMs can alert the plant tissues to perform drought stress mitigating functions in plants. Other phytohormone-induced stress responses include cell wall and cuticle thickening, root and leaf morphology alteration, and anatomical changes of roots, stems, and leaves, which in turn minimize the oxidative stress, water loss, and other adverse effects of drought. Exogenous applications of phytohormones and genetic engineering of phytohormones signaling and biosynthesis pathways mitigate the drought stress effects. Direct modulation of the SMs biosynthetic pathway genes or indirect via phytohormones' regulation provides drought tolerance. Thus, phytohormones and SMs play key roles in plant development under the drought stress environment in crop plants. | INTRODUCTIONA large segment of the population is going to face food scarcity due to climate change and the gradually decreasing arable land area. Plants are confronted to a variable environment while growing from seedling to mature plant. Different abiotic and biotic stresses affect plant growth and development (Cramer et al., 2011;Fujita et al., 2006;Tuteja & Sopory, 2008). Abiotic stress includes drought, submergence, osmotic stress, salinity stress, oxidative stress, ultra-violet irradiation, wounding, and nutrient depletion. The extremity of optimum factors such as high temperature or low temperature and freezing-thawing is also included in abiotic stresses. Biotic stresses include viruses, bacteria, fungi, algae, worms, nematodes, insects, herbivores, and parasitic plants. Plants have to combat these stressors due to their sessile lifestyle (Cramer et al., 2011;Fujita et al., 2006). More than 50% reduction in average yields of major cereal crops has been reported because of various abiotic stresses. Drought is one of the most important abiotic stresses that negatively influence plant performance and causes harsh effects on biomass and yield (Fahad et al., 2017). A

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Lignin deposition in chickpea root xylem under drought

Cited by 32 publications

References 15 publications

Evaluation and Screening of Promising Drought Tolerant Chickpea (Cicer arietinum L.) Genotypes Based on Physiological and Biochemical Attributes Under Drought Conditions

Evaluation and Screening of Promising Drought Tolerant Chickpea (Cicer arietinum L.) Genotypes Based on Physiological and Biochemical Attributes Under Drought Conditions

Root plasticity under abiotic stress

Crosstalk between phytohormones and secondary metabolites in the drought stress tolerance of crop plants: A review

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