Florescence assessment of sunflower genotypes against drought stress environment

Umer, Muhammad; Siddiqui, Zamid Shaheed

doi:10.30848/pjb2020-4(29)

Cited by 5 publications

(7 citation statements)

References 17 publications

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“…Chlorophyll content index, F v /F m and PI ABS are the physiological traits that are linked with plant health, and pigment content is greatly reduced in water stress (Umar and Siddiqui 2018;Umar and Siddiqui 2020). In present study, it was evident from the data that the application of S. meliloti lessens the water stress consequences and maintains quantities of CCI, F v /F m and PI ABS substantially in the stress environment.…”

Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 99%

“…In the last few years, chlorophyll (Chl a) fluorescence is becoming a reliable technique that reflects the photosynthetic ability of the crop cultivars under stressful environments (Stirbet and Govindjee 2011; Kalaji et al . 2018; Umar and Siddiqui 2020). By using fluorescence techniques, the photosynthetic performance can be tested precisely by photosystem II (PSII) functionality.…”

Section: Introductionmentioning

confidence: 99%

“…Salt, drought and less moisture content are the major abiotic constraints that affect crop yield around the world (Umar and Siddiqui 2019;Umar and Siddiqui 2020). Around 30% productive land is facing serious problems of reduction in crop yield due to water stress (Kwon et al 2015).…”

Section: Introductionmentioning

confidence: 99%

“…To investigate photosynthetic performance under a low moisture environment, using nitrogen-fixing bacterium through chlorophyll fluorescence kinetics may provide useful information. In the last few years, chlorophyll (Chl a) fluorescence is becoming a reliable technique that reflects the photosynthetic ability of the crop cultivars under stressful environments (Stirbet and Govindjee 2011;Kalaji et al 2018;Umar and Siddiqui 2020). By using fluorescence techniques, the photosynthetic performance can be tested precisely by photosystem II (PSII) functionality.…”

Section: Introductionmentioning

confidence: 99%

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Sustainable effect of a symbiotic nitrogen‐fixing bacterium Sinorhizobium meliloti on nodulation and photosynthetic traits of four leguminous plants under low moisture stress environment

Siddiqui

Ali

Uddin

2021

Letters Applied Microbiology

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Sustainable effect of a nitrogen‐fixing bacterium Sinorhizobium meliloti on nodulation and photosynthetic traits (phenomenological fluxes) in four leguminous plants species under low moisture stress (20–25% soil moisture content) environment was studied. Sinorhizobium meliloti was isolated from fenugreek (Trigonella foenum‐graecum) root nodules, and later, it was cultured and purified. Nodulation and photosynthetic ability in the presence of S. meliloti were tested in four leguminous plant species, that is, kidney bean (cv. lobia‐2000), black bean (cv. NM‐97), mung bean (cv. NM‐2006) and chickpea (cv. Pb‐2008). Plants of each species were grown in sterilized soil that was previously treated with 25 ml suspension containing S. meliloti at 41 × 106 CFU ml−1 kg−1 pot. One‐month‐old plants were subjected to low soil moisture stress conditions for 15 days, and soil moisture contents were maintained to 20–25% throughout the experimental period. The ability to fix nitrogen, nodule formation, and their subsequent effect on phenomenological fluxes in low moisture treated legumes were studied.

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Section: Resultsmentioning

confidence: 54%

Section: Resultsmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

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Sustainable effect of a symbiotic nitrogen‐fixing bacterium Sinorhizobium meliloti on nodulation and photosynthetic traits of four leguminous plants under low moisture stress environment

Siddiqui

Ali

Uddin

2021

Letters Applied Microbiology

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Role of mineral nutrients, antioxidants, osmotic adjustment and PSII stability in salt tolerance of contrasting wheat genotypes

Hussain

Sohail²,

Shakeel

et al. 2022

Sci Rep

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Global food production is threatened due to increasing salinity and can be stabilized by improving salt tolerance of crops. In the current study, salt tolerance potential of 40 local wheat cultivars against 150 mM NaCl stress was explored. Salt treatment at seedling stage caused less reduction in biomass, K+ and P while more decline of Na+ in tolerant cultivars due to reduced translocation and enhanced exclusion of Na+ from leaves. Principal component analysis based selected S-24, LU-26S, Pasban-90 (salt tolerant) and MH-97, Kohistan-97, Inqilab-91 and Iqbal-2000 (salt sensitive) cultivars were evaluated at adult stage applying 150 mM salinity. Osmotic adjustment by accumulation of soluble sugars and proline and accelerated antioxidant enzymes activities caused efficient scavenging of reactive oxygen species making S-24 and LU-26S tolerant while in MH-97 and Kohistan-97, high MDA represent greater membrane damage due to oxidative stress making them salt sensitive. Chlorophyll a fluorescence transients confirmed better efficiency of photosystem II in S-24 and LU-26S based on energy fluxes (ABS/RC, TRo/RC, ETo/RC and DIo/RC), performance index (PIABS) and maximum quantum yield (Fv/Fm). These findings can be correlated using molecular techniques to identify genes for salt exclusion, osmotic adjustment and photosynthetic activity for use in molecular breeding programs.

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Combining Biometric, Biochemistry, and Photosynthetic Measurements to Analyze the Performance of Two Black Pepper Cultivars Under Water Deficit

D’Addazio,

dos Santos,

Costa Souza

et al. 2023

Communications in Soil Science and Plant Analysis

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Florescence assessment of sunflower genotypes against drought stress environment

Cited by 5 publications

References 17 publications

Sustainable effect of a symbiotic nitrogen‐fixing bacterium Sinorhizobium meliloti on nodulation and photosynthetic traits of four leguminous plants under low moisture stress environment

Sustainable effect of a symbiotic nitrogen‐fixing bacterium Sinorhizobium meliloti on nodulation and photosynthetic traits of four leguminous plants under low moisture stress environment

Role of mineral nutrients, antioxidants, osmotic adjustment and PSII stability in salt tolerance of contrasting wheat genotypes

Combining Biometric, Biochemistry, and Photosynthetic Measurements to Analyze the Performance of Two Black Pepper Cultivars Under Water Deficit

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