为探究如何增强水稻适应海啸和涨潮等气候灾难的能力,”
这种策略的原理是,
美国地质勘探局研究员拉斯蒂·罗德里格斯说,研究人员下一步要做的就是让水稻具有耐热能力。气温每升高1摄氏度产量就会减少10%,
生物探索推荐英文论文摘要:
Increased Fitness of Rice Plants to Abiotic Stress Via Habitat Adapted Symbiosis: A Strategy for Mitigating Impacts of Climate Change
Abstract
Climate change and catastrophic events have contributed to rice shortages in several regions due to decreased water availability and soil salinization. Although not adapted to salt or drought stress, two commercial rice varieties achieved tolerance to these stresses by colonizing them with Class 2 fungal endophytes isolated from plants growing across moisture and salinity gradients.
Plant growth and development, water usage, ROS sensitivity and osmolytes were measured with and without stress under controlled conditions.
The endophytes conferred salt, drought and cold tolerance to growth chamber and greenhouse grown plants. Endophytes reduced water consumption by 20–30% and increased growth rate, reproductive yield, and biomass of greenhouse grown plants. In the absence of stress, there was no apparent cost of the endophytes to plants, however, endophyte colonization decreased from 100% at planting to 65% compared to greenhouse plants grown under continual stress (maintained 100% colonization).
These findings indicate that rice plants can exhibit enhanced stress tolerance via symbiosis with Class 2 endophytes, and suggest that symbiotic technology may be useful in mitigating impacts of climate change on other crops and expanding agricultural production onto marginal lands.
他说:“相反,这些真菌都自然生长于沿海地区的植物(耐盐植物)和地热地区的植物(耐热植物)中。盐度增加和气温升高等压力。”罗德里格斯说,实验非常成功。真菌也许可以帮助植物适应由于气候变化可能导致未来日益严重的干旱、
摘要:由美国地质勘探局牵头的一项研究发现,这说明,这些真菌可以将耐压能力植入和传给水稻,
罗德里格斯说:“这是一项激动人心的突破。相关论文发表于《公共科学图书馆—综合》(PLoS ONE)。鉴于到2050年发展中国家的稻米产量预计将减少15%,盐度增加和干旱,尽管他们用于实验的稻米品种不能自然适应寒冷、
PLoS ONE:植入真菌孢子助水稻适应气候变化
2011-07-18 11:20 · Abel研究发现,