Morphological, physiological, and biochemical responses of Pistacia atlantica seedlings to elevated CO2 concentration and drought stress

Yousefvand, Parvaneh; Pilehvar, Babak; Nasrolahi, Ali

doi:10.1007/s10342-023-01548-x

Cited by 1 publication

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“…The increase in chlorophyll contents in drought- stressed plants raised from transgenerational seeds exposed to e[CO 2 ] may be accredited to the less oxidative damage to chlorophyll contents via quenching of free radicals. 71,72 Drought instigated a considerable decrease in yield and yield attributes of wheat plants raised with transgenerational a[CO 2 ]-exposed seeds. Plants of transgenerational seeds treated with e[CO 2 ] showed a considerably improved grain yield under drought stress.…”

Section: Discussionmentioning

confidence: 99%

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Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

Shafique Ahmad,

Shehzad,

Javid

et al. 2024

ACS Omega

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Drought is the worst environmental stress constraint that inflicts heavy losses to global food production, such as wheat. The metabolic responses of seeds produced overtransgenerational exposure to e[CO 2 ] to recover drought's effects on wheat are still unexplored. Seeds were produced constantly for four generations (F1 to F4) under ambient CO 2 (a[CO 2 ], 400 μmol L −1 ) and elevated CO 2 (e[CO 2 ], 800 μmol L −1 ) concentrations, and then further regrown under natural CO 2 conditions to investigate their effects on the stress memory metabolic processes liable for increasing drought resistance in the next generation (F5). At the anthesis stage, plants were subjected to normal (100% FC, field capacity) and drought stress (60% FC) conditions. Under drought stress, plants of transgenerational e[CO 2 ] exposed seeds showed markedly increased superoxide dismutase (16%), catalase (24%), peroxidase (9%), total antioxidants (14%), and proline (35%) levels that helped the plants to sustain normal growth through scavenging of hydrogen peroxide (11%) and malondialdehyde (26%). The carbohydrate metabolic enzymes such as aldolase (36%), phosphoglucomutase (12%), UDP-glucose pyrophosphorylase (25%), vacuolar invertase (33%), glucose-6-phosphate-dehydrogenase (68%), and cell wall invertase (17%) were decreased significantly; however, transgenerational seeds produced under e[CO 2 ] showed a considerable increase in their activities in drought-stressed wheat plants. Moreover, transgenerational e[CO 2 ] exposed seeds under drought stress caused a marked increase in leaf Ψ w (15%), chlorophyll a (19%), chlorophyll b (8%), carotenoids (12%), grain spike (16%), hundred grain weight (19%), and grain yield (10%). Hence, transgenerational seeds exposed to e[CO 2 ] upregulate the drought recovery metabolic processes to improve the grain yield of wheat under drought stress conditions.

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Section: Discussionmentioning

confidence: 99%

“…b , and Car contents than plants of e [CO 2 ]-treated seeds to drought conditions. The increase in chlorophyll contents in drought-stressed plants raised from transgenerational seeds exposed to e [CO 2 ] may be accredited to the less oxidative damage to chlorophyll contents via quenching of free radicals. , …”

Section: Discussionmentioning

confidence: 99%

Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

Shafique Ahmad,

Shehzad,

Javid

et al. 2024

ACS Omega

View full text Add to dashboard Cite

show abstract

Morphological, physiological, and biochemical responses of Pistacia atlantica seedlings to elevated CO2 concentration and drought stress

Cited by 1 publication

References 87 publications

Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

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Morphological, physiological, and biochemical responses of Pistacia atlantica seedlings to elevated CO2 concentration and drought stress

Cited by 1 publication

References 87 publications

Transgenerational Seed Exposure to Elevated CO2 Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

Transgenerational Seed Exposure to Elevated CO2 Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

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Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat

Transgenerational Seed Exposure to Elevated CO₂ Involves Stress Memory Regulation at Metabolic Levels to Confer Drought Resistance in Wheat