Exogenous application of carbon nanoparticles alleviates drought stress by regulating water status, chlorophyll fluorescence, osmoprotectants, and antioxidant enzyme activity in Capsicum annumn L.

Alluqmani, Saleh M.; Alabdallah, Nadiyah M.

doi:10.1007/s11356-023-26606-0

Cited by 5 publications

(1 citation statement)

References 57 publications

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“…The limitation of drought stress on plants is a complex process that depends not only on the degree and duration of stress but also on the developmental stage and sensitivity of plants, leading to signi cant changes in plant morphology, physiology, biochemistry, and photosynthesis (Alluqmani et al 2023;Martinez-Goni et al 2023). Research shows that the plant height, biomass, leaf relative water content (Abdelaal et al 2022), leaf area and chlorophyll (Chl) content (Roy et al 2021) decreased gradually with the extension of drought stress time.…”

Section: Introductionmentioning

confidence: 99%

Differences of morphological and physiological responses of sainfoin varieties/lines under simulated drought stresses

Yao,

Wang,

Nan

2024

Grassland Science

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Sainfoin (Onobrychis viciaefolia) is an important legume forage. This study aims to explore the response mechanisms of sainfoin germplasm resource accessions to drought stress, which provides the theoretical basis for tolerant breeding of sainfoin. In this study, 20 sainfoin germplasm resource accessions were used as the test materials, and the effects of drought stress on morphological and physiological characteristics were determined under simulated levels of drought (−0.5, −1.0, −1.5 and −2.0 MPa) × exposure times (7 days) in pots. The results showed that leaf area, leaf relative water content, root‐shoot ratio, root length, root surface area, root volume, root diameter, root tip number, chlorophyll a content, chlorophyll b content and catalase activity decreased with increasing drought stress. In contrast, proline, soluble sugar, soluble protein and malondialdehyde contents increased in response to drought. Root activity, superoxide dismutase and peroxidase activities increased first and then decreased and reached the maximum at −1.0 MPa. Cluster analysis showed that 20 sainfoin germplasm resources could be divided into three categories, of which four accessions were high tolerance types, and three accessions were low tolerance type. These findings will help provide some theoretical basis for cultivating new varieties.

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