OsRGA1 optimizes photosynthate allocation for roots to reduce methane emissions and improve yield in paddy ecosystems

甲烷 生态系统 产量(工程) 环境科学 甲烷排放 农学 农林复合经营 生态学 化学 生物 冶金 材料科学
作者
Yun Chen,Yajun Zhang,Siyu Li,Kun Liu,Guoming Li,Jianhua Zhang,Bing Lv,Junfei Gu,Hao Zhang,Jianchang Yang,Lijun Liu
出处
期刊:Soil Biology & Biochemistry [Elsevier BV]
卷期号:160: 108344-108344 被引量:18
标识
DOI:10.1016/j.soilbio.2021.108344
摘要

Rice cultivars influence methane emissions from paddies; however, which plant traits account for this effect and the corresponding mechanisms are poorly understood. A meta-analysis of data from the past 30 years was conducted to reveal the separate relationships of methane emissions from paddy fields with rice roots and N-application rates. A four-year field trial was designed to identify the key role of the rice G-protein α-subunit gene OsRGA1 in photosynthate allocation to roots and methane emissions with two rice cultivars, wild-type Yangdao 6 and mutant rga1 . The results of the meta-analysis suggested that an increase in root biomass would downregulate methane fluxes with an estimated effect size of −15.7% and that nitrogen application increased cumulative methane emissions by 8.4% during the latest decade. The ratio of nonstructural carbohydrates in roots to total organic carbon in exudates (NSC/TOC) might be the major index driving the differences in CH 4 emissions among rice cultivars. OsRGA1 functioned in the allocation of photosynthates between root growth and rhizodeposition. The NSC/TOC ratio of the mutant rga1 was 36% lower than that of Yangdao 6, and belowground biomass was lower but root exudate quantity was greater, resulting in 22% higher methane emissions and 59% lower yield. Wild-type Yangdao 6 with higher nitrogen-use efficiency allocated more photosynthates for anabolic processes, thereby contributing to a vigorous root system and alleviating the inhibitory effects of nitrogen on methanotrophs, which led to low emissions and high rice production. Genetic improvement focusing on rice roots and nitrogen input effects as modulated by OsRGA1 may help develop strategies to simultaneously improve rice yield and decrease methane emissions. • Allocation of assimilate in roots drives the difference in CH 4 emissions among cultivars. • Greater storage of photosynthates in roots mitigates CH 4 emissions and improves yield. • OsRGA1 synergizes with C and N cycling in the rhizosphere, which benefits CH 4 mitigation.
最长约 10秒,即可获得该文献文件

科研通智能强力驱动
Strongly Powered by AbleSci AI
更新
PDF的下载单位、IP信息已删除 (2025-6-4)

科研通是完全免费的文献互助平台,具备全网最快的应助速度,最高的求助完成率。 对每一个文献求助,科研通都将尽心尽力,给求助人一个满意的交代。
实时播报
忞航完成签到 ,获得积分10
1秒前
Silence完成签到 ,获得积分10
3秒前
贰鸟应助王富贵采纳,获得10
6秒前
Smoiy完成签到 ,获得积分10
9秒前
weng完成签到,获得积分10
10秒前
笑笑完成签到,获得积分10
11秒前
pagemao完成签到 ,获得积分10
11秒前
12秒前
mbl2006完成签到 ,获得积分10
17秒前
背书强完成签到 ,获得积分10
17秒前
feihua1完成签到 ,获得积分10
18秒前
小亮哈哈完成签到,获得积分0
19秒前
Wang发布了新的文献求助10
19秒前
keleboys完成签到 ,获得积分10
19秒前
nine2652完成签到 ,获得积分10
25秒前
姚怜南完成签到,获得积分10
27秒前
28秒前
wanghao完成签到 ,获得积分10
29秒前
威武画板完成签到 ,获得积分10
31秒前
mark33442完成签到,获得积分10
32秒前
JUNE发布了新的文献求助30
34秒前
34秒前
有终完成签到 ,获得积分10
36秒前
fishss完成签到,获得积分10
38秒前
胡燕完成签到 ,获得积分10
39秒前
柏忆南完成签到 ,获得积分10
40秒前
Zoe完成签到 ,获得积分20
40秒前
小梦完成签到,获得积分10
41秒前
量子星尘发布了新的文献求助30
47秒前
虎虎生威完成签到,获得积分10
50秒前
无限晓蓝完成签到 ,获得积分10
52秒前
QQLL完成签到,获得积分10
55秒前
方方完成签到 ,获得积分10
56秒前
马桶盖盖子完成签到 ,获得积分10
58秒前
Zion完成签到,获得积分0
1分钟前
调皮从筠发布了新的文献求助20
1分钟前
木木杉完成签到 ,获得积分10
1分钟前
方俊驰发布了新的文献求助10
1分钟前
friend516完成签到 ,获得积分10
1分钟前
1分钟前
高分求助中
【提示信息,请勿应助】关于scihub 10000
A new approach to the extrapolation of accelerated life test data 1000
Coking simulation aids on-stream time 450
北师大毕业论文 基于可调谐半导体激光吸收光谱技术泄漏气体检测系统的研究 390
Phylogenetic study of the order Polydesmida (Myriapoda: Diplopoda) 370
Robot-supported joining of reinforcement textiles with one-sided sewing heads 360
Novel Preparation of Chitin Nanocrystals by H2SO4 and H3PO4 Hydrolysis Followed by High-Pressure Water Jet Treatments 300
热门求助领域 (近24小时)
化学 材料科学 医学 生物 工程类 有机化学 生物化学 物理 内科学 纳米技术 计算机科学 化学工程 复合材料 遗传学 基因 物理化学 催化作用 冶金 细胞生物学 免疫学
热门帖子
关注 科研通微信公众号,转发送积分 4015603
求助须知:如何正确求助?哪些是违规求助? 3555597
关于积分的说明 11318138
捐赠科研通 3288782
什么是DOI,文献DOI怎么找? 1812284
邀请新用户注册赠送积分活动 887882
科研通“疑难数据库(出版商)”最低求助积分说明 812015