Amelioration of the physio-biochemical responses to salinity stress and computing the primary germination index components in cauliflower on seed priming

Gour, Tripti; Sharma, Anukriti; Lal, Ratan; Heikrujam, Monika; Gupta, Anshul; Agarwal, Lokesh Kumar; Chetri, Siva P. K.; Kumar, Rajesh; Sharma, Kuldeep

doi:10.1016/j.heliyon.2023.e14403

Cited by 7 publications

(2 citation statements)

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“…Importantly, we observed such an increase under salt stress only in IR64, and halopriming sharply decreased this ratio. Higher photosynthetic pigment contents in haloprimed plants have been reported in many studies [35,40,41].…”

Section: Discussionmentioning

confidence: 72%

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Seed Halopriming: A Promising Strategy to Induce Salt Tolerance in Indonesian Pigmented Rice

Purwestri,

Nurbaiti,

Putri

et al. 2023

Plants

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Unfavorable environmental conditions and climate change impose stress on plants, causing yield losses worldwide. The Indonesian pigmented rice (Oryza sativa L.) cultivars Cempo Ireng Pendek (black rice) and Merah Kalimantan Selatan (red rice) are becoming popular functional foods due to their high anthocyanin contents and have great potential for widespread cultivation. However, their ability to grow on marginal, high-salinity lands is limited. In this study, we investigated whether seed halopriming enhances salt tolerance in the two pigmented rice cultivars. The non-pigmented cultivars IR64, a salt-stress-sensitive cultivar, and INPARI 35, a salt tolerant, were used as control. We pre-treated seeds with a halopriming solution before germination and then exposed the plants to a salt stress of 150 mM NaCl at 21 days after germination using a hydroponic system in a greenhouse. Halopriming was able to mitigate the negative effects of salinity on plant growth, including suppressing reactive oxygen species accumulation, increasing the membrane stability index (up to two-fold), and maintaining photosynthetic pigment contents. Halopriming had different effects on the accumulation of proline, in different rice varieties: the proline content increased in IR64 and Cempo Ireng Pendek but decreased in INPARI 35 and Merah Kalimantan Selatan. Halopriming also had disparate effects in the expression of stress-related genes: OsMYB91 expression was positively correlated with salt treatment, whereas OsWRKY42 and OsWRKY70 expression was negatively correlated with this treatment. These findings highlighted the potential benefits of halopriming in salt-affected agro-ecosystems.

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Section: Discussionmentioning

confidence: 72%

“…Seed priming as a pre-germinative treatment might create a moderate stress signal that elicits a "priming memory" to help plants cope with subsequent stress and improve stress tolerance [40]. In this study, we determined that halopriming treatment extended the duration of seed germination in all four rice cultivars examined.…”

Section: Discussionmentioning

confidence: 96%