Farmers facing extreme weather conditions associated with climate change could benefit from the finding that a gene that 'waterproofs' rice plants also appears to protect them from drought.
The Sub1a gene, which naturally occurs in some low-yielding varieties in India, was discovered in the 1990s at the International Rice Research Institute (IRRI), in the Philippines. Subsequent research showed that the gene bred into the high-yielding varieties can protect the submerged rice in over-flooded paddies. Following successful field trials the improved rice has been rolled out in Bangladesh, India and the Philippines.
But researchers from the US-based University of California, Riverside (UCR) wanted to test whether the insertion of the waterproofing gene was detrimental to how the rice responds to other stresses, such as drought.
They found that Sub1A coordinates how the plant cells respond to dehydration, which occurs in droughts, but also following a period of submergence in floods. The gene helps rice recover after a flood, when it dehydrates after sudden exposure to drier conditions, and the same dehydration happens in droughts.
"What was really neat about the study was that we realised submergence is a very complicated stress," said Julia Bailey-Serres, a professor of genetics at UCR and the lead author of the study. After being submerged, rice experiences dehydration as it would during a drought, and Sub1a's task is to help it recover.
The effect has been seen in the laboratory and the greenhouse so far, and IRRI is planning follow-up research later this year, said Abdelbagi Ismail, senior scientist at IRRI who was involved in the Sub1a research and is now the coordinator of the project on stress-tolerant rice funded by the Bill & Melinda Gates Foundation.
He said the discovery — if repeated in the field — opened up new possibilities for rice breeding and farming.
"If you look at rice-growing areas, many of them have the same two stresses [floods and droughts]," Ismail said.
"Climate change will further increase the variation in the weather worldwide as it can be very wet and dry all in a very short period," he said. "Thus we need new varieties [of crops], especially those which can tolerate both [stresses]."
Three billion people worldwide depend on rice as a staple food. The crop is vulnerable to various environmental stresses, but Ismail said that advances in breeding stress-tolerant varieties are enabling production to keep up with the rising demand.
主站蜘蛛池模板： 公和我在厨房好爽中文字幕| 国产粗话肉麻对白在线播放| 中文字幕精品一区二区精品| 最近中文字幕版2019| 国产精品看高国产精品不卡| 一区二区三区伦理高清| 日本中文字幕一区二区有码在线| 人妻无码一区二区三区四区| 美女和男生一起差差差| 国产亚洲福利精品一区二区| 国产香蕉一区二区在线网站| 国产精品亚洲精品日韩动图| 97久久超碰国产精品2021| 女m羞辱调教视频网站| 一级成人生活片免费看| 最近中文国语字幕在线播放| 亚洲成色在线综合网站| 波多野结衣一区在线观看| 人成午夜免费大片在线观看| 精品久久久久久亚洲综合网| 双女车车好快的车车有点污| 色老成人精品视频在线观看| 国产午夜在线观看视频播放| 99re6热视频精品免费观看| 好男人观看免费视频播放全集 | 免费大片av手机看片| 精品综合一区二区三区| 国产私拍福利精品视频推出| 69xx免费观看视频| 成人在线视频免费| 丰满岳乱妇一区二区三区| 欧美军同性videosbest| 亚洲欧美中文日韩v在线观看| 激情射精爆插热吻无码视频| 伊人久久大香线蕉亚洲| 疯狂做受xxxx高潮视频免费| 免费在线观看一级毛片| 福利视频第一区| 国产一区二区在线视频| 阿v视频在线观看| 国产免费无遮挡精品视频|