Water Use, Leaf Cooling and Carbon Assimilation Efficiency of Heat Resistant Common Beans Evaluated in Western Amazonia.
Water Use, Leaf Cooling and Carbon Assimilation Efficiency of Heat Resistant Common Beans Evaluated in Western Amazonia.
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DOI：
10.3389/fpls.2021.644010
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发表时间：
2021
影响因子：
5.6
通讯作者：
Rao IM
中科院分区：
文献类型：
--
作者：
Suárez JC;Urban MO;Contreras AT;Noriega JE;Deva C;Beebe SE;Polanía JA;Casanoves F;Rao IM
在我们的研究中，我们分析了30年来的气候数据，揭示了西亚马孙地区的豆类生产风险。气候学特征显示，白天和夜间温度高，相对湿度高，水汽压差低。我们对目标环境的了解使我们能够选择在亚马逊酸性土壤上获得更高产量的性状组合。本研究以具有不同遗传背景的菜豆品系为材料进行研究。在高温下，我们根据气体交换的详细数据分析，确定了三种豆类的水分利用效率类型。挥霍和不保水的材料表现出叶片冷却和有效的光合作用物质分配到种子，这些属性被发现与较高的光合作用效率有关。因此，在亚马逊西部的酸性土壤条件下，水的消耗者而不是节水者被认为是耐热的。BFS 10、SEN 52、SER 323、不同SEF(SEF73、SEF10、SEF40、SEF70)、SCR 56、SMR 173和SMN 99等基因型对产量的负面影响较小。这些基因型可作为改良干种子产量的亲本。关于水分利用效率类型的改进知识可用于豆类作物的改良工作，以及旨在更好地了解豆科植物耐热性内在机制的进一步研究。
In our study, we analyzed 30years of climatological data revealing the bean production risks for Western Amazonia. Climatological profiling showed high daytime and nighttime temperatures combined with high relative humidity and low vapor pressure deficit. Our understanding of the target environment allows us to select trait combinations for reaching higher yields in Amazonian acid soils. Our research was conducted using 64 bean lines with different genetic backgrounds. In high temperatures, we identified three water use efficiency typologies in beans based on detailed data analysis on gasometric exchange. Profligate water spenders and not water conservative accessions showed leaf cooling, and effective photosynthate partitioning to seeds, and these attributes were found to be related to higher photosynthetic efficiency. Thus, water spenders and not savers were recognized as heat resistant in acid soil conditions in Western Amazonia. Genotypes such as BFS 10, SEN 52, SER 323, different SEFs (SEF 73, SEF 10, SEF 40, SEF 70), SCR 56, SMR 173, and SMN 99 presented less negative effects of heat stress on yield. These genotypes could be suitable as parental lines for improving dry seed production. The improved knowledge on water-use efficiency typologies can be used for bean crop improvement efforts as well as further studies aimed at a better understanding of the intrinsic mechanisms of heat resistance in legumes.
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影响因子：
5.7
作者：
Chen, Yang-Er;Zhang, Chao-Ming;Yuan, Shu
通讯作者：
Yuan, Shu
影响因子：
6.9
作者：
Chaves, MM;Oliveira, MM
通讯作者：
Oliveira, MM
影响因子：
1.9
作者：
Andrade, Estela R.;Ribeiro, Vinicius N.;Carbonell, Sergio A. M.
通讯作者：
Carbonell, Sergio A. M.
拟南芥中用水效率和碳同位素组成的遗传变异的生理基础。
影响因子：
3.7
作者：
Easlon, Hsien Ming;Nemali, Krishna S.;Richards, James H.;Hanson, David T.;Juenger, Thomas E.;McKay, John K.
通讯作者：
McKay, John K.
影响因子：
6.6
作者：
Boomiraj, K.;Chakrabarti, B.;Chander, S.
通讯作者：
Chander, S.