Phenotypic variation in photosynthetic traits in wheat grown under field versus glasshouse conditions.
Phenotypic variation in photosynthetic traits in wheat grown under field versus glasshouse conditions.
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DOI：
10.1093/jxb/erac096
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发表时间：
2022-05-23
影响因子：
6.9
通讯作者：
中科院分区：
文献类型：
--
作者：
认识到光合作用在提高作物产量方面尚未开发的潜力，促使人们进行研究，以确定育种目标。CO2固定酶Rubisco的特点是许多低效率，并经常限制冠层顶部的碳同化，这是小麦改良的一个明确目标。从80个春小麦品系中选择了两个具有相似遗传背景且使用高通量表型分析方法测定的每单位叶氮Rubisco体内最大羧化活性（Vc，max，25/Narea）存在差异的面包小麦品系进行详细研究。利用温室生长的植株对两个品系的光合性状进行详细的表型分析，结果表明，直接通过体内和体外方法测定的Vc，max，25/Narea没有差异。80个小麦品系的温室生长植物的详细表型分析也表明，通过田间生长植物的高通量表型分析测量的光合性状之间没有相关性。我们的研究结果表明，决定作物生产力的性状和田间生长的植物所经历的动态环境之间的复杂相互作用，需要考虑在特定环境下育种时，设计有效的小麦作物产量提高策略。与在动态田间条件下生长的植物相比，在温室中生长的小麦植物表现出不同的生理特性，突出了在特定环境下育种时考虑现实环境条件的必要性。
Recognition of the untapped potential of photosynthesis to improve crop yields has spurred research to identify targets for breeding. The CO2-fixing enzyme Rubisco is characterized by a number of inefficiencies, and frequently limits carbon assimilation at the top of the canopy, representing a clear target for wheat improvement. Two bread wheat lines with similar genetic backgrounds and contrasting in vivo maximum carboxylation activity of Rubisco per unit leaf nitrogen (Vc,max,25/Narea) determined using high-throughput phenotyping methods were selected for detailed study from a panel of 80 spring wheat lines. Detailed phenotyping of photosynthetic traits in the two lines using glasshouse-grown plants showed no difference in Vc,max,25/Narea determined directly via in vivo and in vitro methods. Detailed phenotyping of glasshouse-grown plants of the 80 wheat lines also showed no correlation between photosynthetic traits measured via high-throughput phenotyping of field-grown plants. Our findings suggest that the complex interplay between traits determining crop productivity and the dynamic environments experienced by field-grown plants needs to be considered in designing strategies for effective wheat crop yield improvement when breeding for particular environments. Wheat plants grown in the glasshouse show different physiological properties compared with plants grown under dynamic field conditions, highlighting the need to consider realistic environmental conditions when breeding for particular environments.
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SBPase活性增加可改善温室条件下生长的小麦的光合作用和谷物产量。
DOI：
10.1098/rstb.2016.0384
发表时间：
2017-09-26
期刊：
Philosophical transactions of the Royal Society of London. Series B, Biological sciences
影响因子：
--
作者：
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通讯作者：
Raines CA
影响因子：
7.4
作者：
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通讯作者：
EVANS, JR
影响因子：
9.4
作者：
Busch, Florian A.;Sage, Rowan F.
通讯作者：
Sage, Rowan F.
影响因子：
5.2
作者：
Byrne, Tomas;Grant, James;Barth, Susanne
通讯作者：
Barth, Susanne
影响因子：
7
作者：
Gardiner LJ;Joynson R;Omony J;Rusholme-Pilcher R;Olohan L;Lang D;Bai C;Hawkesford M;Salt D;Spannagl M;Mayer KFX;Kenny J;Bevan M;Hall N;Hall A
通讯作者：
Hall A