Physiological and Biochemical Adaptations in Lentil Genotypes Under Drought Stress

Mishra, B. K.; Srivastava, J. P.; Lal, J. P.; Sheshshayee, M. S.

doi:10.7868/s0015330316040114

Cited by 6 publications

(6 citation statements)

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“…Even though the increase in both osmolytes was noted in some AgNPs ( 50 ) treatments with heat stress, but overall this increase was less significant as compared with heat-stress application only. According to Mishra et al [59] and Ahmad et al [60] plants produce different types of osmolytes such as proline and soluble sugars as a counterpart to abiotic stresses and involved in stress tolerance through osmotic adjustment and ROS detoxification. The findings of Tripathi et al [61] illustrated alleviation of UV-B stress by increased production of osmolytes (proline/sugar) in response to silicon NPs in wheat.…”

Section: Effects Of Agnps On Non-enzymatic Osmolytes Production In Whmentioning

confidence: 99%

Assessment of AgNPs exposure on physiological and biochemical changes and antioxidative defence system in wheat ( Triticum aestivum L) under heat stress

Iqbal

Raja

Mashwani

et al. 2018

IET nanobiotechnol.

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The present study was designed to check the role of silver nanoparticles (AgNPs) on physiological, biochemical parameters and antioxidants of wheat (Triticum aestivum L.) under heat stress. Plant extract of Moringa oleifera was used for AgNPs synthesis followed by characterization through UV-Vis spectroscopy, SEM, XRD and Zeta analyser. Heat stress was applied in range of 35-40°C for 3 hrs/ day for 3 days to wheat plants at trifoliate stage. Heat stress decreased the RWC (13.2%), MSI (16.3%), chl a (5.2%), chl b (4.1%) and TCCs (9.9%). Wheat plants treated with AgNPs showed significant increase in RWC (12.2%), MSI (26.5%), chl a (10%), chl b (16.4%), TCCs (19%), TPC (2.4%), TFC (2.5%), TASC (2.5%), SOD (1.3%), POX (1.5%), CAT (1.8%), APX (1.2%) and GPX (1.4%), under heat stress. Lower concentration of AgNPs (50 mg/l) decreased the sugar (5.8%) and proline contents (4%), while increase was observed in higher AgNPs concentrations. Overall, AgNPs treatment enhanced thermo-tolerance in wheat plants, but the mechanism of AgNPs action needs further investigation at genome and proteome level in wheat plants under heat stress.

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Section: Effects Of Agnps On Non-enzymatic Osmolytes Production In Whmentioning

confidence: 99%

Assessment of AgNPs exposure on physiological and biochemical changes and antioxidative defence system in wheat ( Triticum aestivum L) under heat stress

Iqbal

Raja

Mashwani

et al. 2018

IET nanobiotechnol.

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“…A heat wave (35°C for 6 days) across south-eastern Australia in the year 2009 reduced lentil seed yields by 70% (Delahunty et al, 2015). The adverse impact of drought stress on seed yield in lentil genotypes has been reported (Kumar et al, 2012), and terminal drought during pod filling is detrimental for seed yield (Mishra, Srivastava, Lal, & Sheshshayee, 2016). Lentils are great sources of many nutrients including protein, fiber, and various minerals and are consumed all over the world for their high nutritional quality (Thavarajah et al, 2015).…”

Section: Introductionmentioning

confidence: 99%

Influence of drought and heat stress, applied independently or in combination during seed development, on qualitative and quantitative aspects of seeds of lentil (Lens culinarisMedikus) genotypes, differing in drought sensitivity

Sehgal

Sita

Bhandari

et al. 2018

Plant Cell & Environment

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Terminal droughts, along with high temperatures, are becoming more frequent to strongly influence the seed development in cool-season pulses like lentil. In the present study, the lentil plants growing outdoors under natural environment were subjected to following treatments at the time of seed filling till maturity: (a) 28/23 °C day/night temperature as controls; (b) drought stressed, plants maintained at 50% field capacity, under the same growth conditions as in a; (c) heat stressed, 33/28 °C day/night temperature, under the same growth conditions as in a; and (d) drought + heat stressed, plants at 50% field capacity, 33/28 °C day/night temperature, under the same growth conditions as in (a). Both heat and drought resulted in marked reduction in the rate and duration of seed filling to decrease the final seed size; drought resulted in more damage than heat stress; combined stresses accentuated the damage to seed starch, storage proteins and their fractions, minerals, and several amino acids. Comparison of a drought-tolerant and a drought-sensitive genotype indicated the former type showed significantly less damage to various components of seeds, under drought as well as heat stress suggesting a cross tolerance, which was linked to its (drought tolerant) better capacity to retain more water in leaves and hence more photo-assimilation ability, compared with drought-sensitive genotype.

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“…Roots were oven dried at 60°C for 48 h and their dry weight was determined. N concentration from 100 mg dried/powdered root samples was estimated by semi-automatic nitrogen analyzer (Kjeldahl, Pelican, Kelplus-classic DX VATS, E), adapting Kjeldahl methods ( Mishra et al, 2016 ).…”

Section: Methodsmentioning

confidence: 99%

Trichoderma asperellum T42 Reprograms Tobacco for Enhanced Nitrogen Utilization Efficiency and Plant Growth When Fed with N Nutrients

Singh¹,

Dwivedi²,

Sarma³

et al. 2018

Front. Plant Sci.

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Trichoderma spp., are saprophytic fungi that can improve plant growth through increased nutrient acquisition and change in the root architecture. In the present study, we demonstrate that Trichoderma asperellum T42 mediate enhancement in host biomass, total nitrogen content, nitric oxide (NO) production and cytosolic Ca2+ accumulation in tobacco. T42 inoculation enhanced lateral root, root hair length, root hair density and root/shoot dry mass in tobacco under deprived nutrients condition. Interestingly, these growth attributes were further elevated in presence of T42 and supplementation of NO3- and NH4+ nutrients to tobacco at 40 and 70 days, particularly in NO3- supplementation, whereas no significant increment was observed in nia30 mutant. In addition, NO production was more in tobacco roots in T42 inoculated plants fed with NO3- nutrient confirming NO generation was dependent on NR pathway. NO3- dependent NO production contributed to increase in lateral root initiation, Ca2+ accumulation and activities of nitrate transporters (NRTs) in tobacco. Higher activities of several NRT genes in response to T42 and N nutrients and suppression of ammonium transporter (AMT1) suggested that induction of high affinity NRTs help NO3- acquisition through roots of tobacco. Among the NRTs NRT2.1 and NRT2.2 were more up-regulated compared to the other NRTs. Addition of sodium nitroprusside (SNP), relative to those supplied with NO3-/NH4+ nutrition and T42 treated plants singly, and with application of NO inhibitor, cPTIO, confirmed the altered NO fluorescence intensity in tobacco roots. Our findings suggest that T42 promoted plant growth significantly ant N content in the tobacco plants grown under N nutrients, notably higher in NO3-, providing insight of the strategy for not only tobacco but probably for other crops as well to adapt to fluctuating nitrate availability in soil.

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Physiological and Biochemical Adaptations in Lentil Genotypes Under Drought Stress

Cited by 6 publications

References 0 publications

Assessment of AgNPs exposure on physiological and biochemical changes and antioxidative defence system in wheat ( Triticum aestivum L) under heat stress

Assessment of AgNPs exposure on physiological and biochemical changes and antioxidative defence system in wheat ( Triticum aestivum L) under heat stress

Influence of drought and heat stress, applied independently or in combination during seed development, on qualitative and quantitative aspects of seeds of lentil (Lens culinarisMedikus) genotypes, differing in drought sensitivity

Trichoderma asperellum T42 Reprograms Tobacco for Enhanced Nitrogen Utilization Efficiency and Plant Growth When Fed with N Nutrients

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