Interaction between TaNOX7 and TaCDPK13 Contributes to Plant Fertility and Drought Tolerance by Regulating ROS Production.,Journal of Agricultural and Food Chemistry

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Interaction between TaNOX7 and TaCDPK13 Contributes to Plant Fertility and Drought Tolerance by Regulating ROS Production.
Journal of Agricultural and Food Chemistry ( IF 5.7 ) Pub Date : 2020-06-18 , DOI: 10.1021/acs.jafc.0c02146
Chun-Hong Hu _{1,

2} , Qing-Dong Zeng ₃ , Li Tai ₁ , Bin-Bin Li ₁ , Peng-Peng Zhang ₁ , Xiu-Min Nie ₁ , Peng-Qi Wang ₁ , Wen-Ting Liu ₁ , Wen-Qiang Li ₁ , Zhen-Sheng Kang ₃ , De-Jun Han ₄ , Kun-Ming Chen ₁

Affiliation

Reactive oxygen species (ROS) homeostasis is critical for both physiological processes and stress responses of plants. NADPH oxidases (NOXs) are the key producers of ROS in plants. However, their functions in ROS homeostasis and plant growth regulation in wheat (Triticum aestivum) are little investigated. Here, we cloned and characterized a NOX isoform TaNOX7 in wheat. Overexpression of TaNOX7 in rice led to enhanced root length, ROS production, drought tolerance as well as bigger panicles and higher yield but shorter growth period duration. Further results indicate that TaCDPK13, a member of calcium-dependent protein kinases (CDPKs), can directly interact with TaNOX7 and enhance ROS production in plants. These results demonstrate that TaNOX7 plays crucial roles in wheat development, fertility, and drought tolerance via interaction with TaCDPK13, which may act as an upstream regulator of TaNOX7 to regulate ROS production in wheat.

中文翻译：

TaNOX7和TaCDPK13之间的相互作用通过调节ROS的产生有助于植物的肥力和耐旱性。

活性氧（ROS）的稳态对于植物的生理过程和胁迫响应都至关重要。NADPH氧化酶（NOXs）是植物中ROS的主要生产者。然而，它们在小麦的ROS稳态和植物生长调节中的功能（小麦））很少进行调查。在这里，我们克隆并鉴定了小麦中的NOX亚型TaNOX7。TaNOX7在水稻中的过表达导致根长增加，ROS产生，耐旱性以及更大的穗数和更高的产量，但缩短了生育期。进一步的结果表明，TaCDPK13是钙依赖性蛋白激酶（CDPK）的成员，可以直接与TaNOX7相互作用并增强植物中ROS的产生。这些结果表明，TaNOX7通过与TaCDPK13相互作用，在小麦发育，肥力和耐旱性中发挥关键作用，而TaCDPK13可能充当TaNOX7的上游调节剂，以调节小麦中ROS的产生。

更新日期：2020-07-15

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