Improving C4 photosynthesis to increase productivity under optimal and suboptimal conditions.
Improving C4 photosynthesis to increase productivity under optimal and suboptimal conditions.
复制标题
DOI：
10.1093/jxb/erab327
复制
发表时间：
2021-09-02
影响因子：
6.9
通讯作者：
Kromdijk J
中科院分区：
文献类型：
--
作者：
Sales CRG;Wang Y;Evers JB;Kromdijk J
我们回顾了改善光合作用以提高C4作物产量的理由，并强调了在最佳和次优条件下缓解限制C4光合作用表现的瓶颈的潜在策略。虽然提高光合作用效率被广泛认为是提高作物产量的一种未得到充分利用的策略，但这一领域的研究强烈偏向于C3光合作用的物种，而不是C4物种。在这里，我们概述了改善C4光合作用以提高作物产量的潜在策略，通过回顾在最佳和次优条件下限制C4 NADP-苹果酸酶途径的主要瓶颈。最近的实验结果表明，非胁迫条件下的稳态C4光合作用可以通过增加Rubisco含量或电子传递能力来增强，这两者也可能在超适温度下刺激CO2的同化。在干旱、高温或低温胁迫下或在光合作用诱导期间，其他几个假定的光合作用瓶颈还有待进一步的实验验证。根据玉米、甘蔗和高粱的源库相互作用，在可收获部分的形成和生长期间缓解这些光合作用瓶颈可能会提高产量。种植密度的增加也增加了预期收益，这增加了光合作用来源限制对作物产量的影响。
We review the case for improving photosynthesis to increase yields in C4 crops, and highlight potential strategies to alleviate bottlenecks limiting C4 photosynthetic performance under optimal and suboptimal conditions. Although improving photosynthetic efficiency is widely recognized as an underutilized strategy to increase crop yields, research in this area is strongly biased towards species with C3 photosynthesis relative to C4 species. Here, we outline potential strategies for improving C4 photosynthesis to increase yields in crops by reviewing the major bottlenecks limiting the C4 NADP-malic enzyme pathway under optimal and suboptimal conditions. Recent experimental results demonstrate that steady-state C4 photosynthesis under non-stressed conditions can be enhanced by increasing Rubisco content or electron transport capacity, both of which may also stimulate CO2 assimilation at supraoptimal temperatures. Several additional putative bottlenecks for photosynthetic performance under drought, heat, or chilling stress or during photosynthetic induction await further experimental verification. Based on source–sink interactions in maize, sugarcane, and sorghum, alleviating these photosynthetic bottlenecks during establishment and growth of the harvestable parts are likely to improve yield. The expected benefits are also shown to be augmented by the increasing trend in planting density, which increases the impact of photosynthetic source limitation on crop yields.
登录
查看更多内容
影响因子：
2.3
作者：
Cairns, Jill E.;Crossa, Jose;Atlin, Gary N.
通讯作者：
Atlin, Gary N.
影响因子：
3
作者：
Carmo-Silva, Ana E.;Soares, Ana S.;Arrabaca, Maria Celeste
通讯作者：
Arrabaca, Maria Celeste
影响因子：
3.7
作者：
BECKER, TW;FOCK, HP
通讯作者：
FOCK, HP
影响因子：
6.9
作者：
Arrivault S;Obata T;Szecówka M;Mengin V;Guenther M;Hoehne M;Fernie AR;Stitt M
通讯作者：
Stitt M
DOI：
10.1007/s00122-018-3193-4
发表时间：
2019-01
期刊：
TAG. Theoretical and applied genetics. Theoretische und angewandte Genetik
影响因子：
--
作者：
Avramova V;Meziane A;Bauer E;Blankenagel S;Eggels S;Gresset S;Grill E;Niculaes C;Ouzunova M;Poppenberger B;Presterl T;Rozhon W;Welcker C;Yang Z;Tardieu F;Schön CC
通讯作者：
Schön CC