Lalthazuali Esther, Marwein Badaiahun, Sailo Hmingremhlua, Lalbiaktluanga P S, Vanlalmuana Mc F, Ralte Lalfakzuala
Department of Botany, Mizoram University, Aizawl 796004, India.
Mycologia. 2025 Jul-Aug;117(4):546-558. doi: 10.1080/00275514.2025.2474900. Epub 2025 Apr 24.
Global warming increasingly challenges agricultural productivity due to rising salt and water scarcity stress. In response to these challenges, the present study investigates the potential of dark septate endophytes (DSEs) from Khawrihnim Village, Mizoram, India, to enhance the tolerance of upland rice (). Two DSE species, and , were identified and examined for their potential enhancement of plant resilience to salt and water scarcity stress. The result showed that both DSE species substantially impacted rice seed germination, biomass accumulation, and oxidative stress responses under salt and water scarcity conditions. Biomass content was augmented under elevated stress levels (-0.90 MPa), suggesting possible stress tolerance mechanisms. Increased superoxide dismutase activity and diminished malondialdehyde levels under stress conditions underscored the DSE's capacity to alleviate reactive oxygen species and lipid peroxidation in plants. Furthermore, seed and shoot germination rates were markedly enhanced by 60% using DSEs as biofertilizers, particularly evident in direct treatments. These findings highlight the efficacy of the DSEs and as biofertilizers to enhance plant development and resilience in adverse environmental conditions. Their capacity to augment abiotic stress resilience and promote agricultural sustainability presents a significant opportunity for enhancing crop output, especially in areas susceptible to stress.
由于盐分上升和水资源短缺压力，全球变暖对农业生产力构成了越来越大的挑战。为应对这些挑战，本研究调查了来自印度米佐拉姆邦Khawrihnim村的深色有隔内生菌（DSE）提高旱稻耐受性的潜力。鉴定了两种DSE物种，即 和 ，并检测了它们增强植物对盐和水资源短缺胁迫的恢复力的潜力。结果表明，这两种DSE物种在盐和水资源短缺条件下对水稻种子萌发、生物量积累和氧化应激反应均有显著影响。在较高胁迫水平（-0.90 MPa）下生物量含量增加，表明可能存在胁迫耐受机制。胁迫条件下超氧化物歧化酶活性增加和丙二醛水平降低，突出了DSE减轻植物体内活性氧和脂质过氧化的能力。此外，使用DSE作为生物肥料，种子和芽的萌发率显著提高了60%，在直接处理中尤为明显。这些发现突出了 和 作为生物肥料在恶劣环境条件下增强植物生长和恢复力的功效。它们增强非生物胁迫恢复力和促进农业可持续性的能力为提高作物产量提供了重要机会，特别是在易受胁迫的地区。
