d-amino acids (d-AAs) can be found in soils, and recent studies indicate that plants exhibit multiple behaviors in response to the type of d-AAs present. d-Ala and d-Ser have the greatest adverse effects on plant growth and development, however the role of d-Ala as a source of nitrogen (N) and d-Ser as an agonist of glutamate receptors (GLRs) in plants have been proposed. Though, there is very little knowledge about the role of d-AAs in regulating plant growth. In this paper we report the effect of d-AAs on the root growth of habanero pepper (Capsicum chinense Jacq.). It was found that the primary root (PR) was more sensitive to d-Asp and d-Ala, which caused a complete halt in the growth of the organ. The lateral root (LR) number increased following the application of d-Leu either individually or in a mixture with d-Val and d-Cys. Also, d-Val increased the leaf area. Overall, the three d-AAs acted synergistically to increase the total radical length. The mixture of these three d-AAs increased the concentration of nitrate, total amino acids, and protein. These results suggest that d-Val, d-Leu, and d-Cys regulate cellular metabolism and stimulate root growth. Here we provide important information to understand the role of d-AAs in the regulation of root plant growth.

中文翻译：

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氨基酸混合物处理的哈瓦那辣椒（辣椒）的根生长和氮代谢产物含量的增加

d-氨基酸（d -AAs）可以在土壤中发现，最近的研究表明，植物对存在的d -AAs类型表现出多种行为。d- Ala和d- Ser对植物生长和发育的不利影响最大，但是，d- Ala作为植物中的氮源（N）和d- Ser作为谷氨酸受体（GLRs）的激动剂的作用一直存在。建议。但是，关于d -AA在调节植物生长中的作用的知识很少。在本文中，我们报告了d -AAs对哈瓦那辣椒（Capsicum chinense）根系生长的影响雅克。发现初级根（PR）对d -Asp和d -Ala更敏感，这导致器官的生长完全停止。侧根（LR）数目增加的应用下列d -Leu单独或以混合物与d -Val和d -Cys。另外，d -Val增加了叶面积。总体而言，三个d -AA具有协同作用以增加总自由基长度。这三种d -AA的混合物增加了硝酸盐，总氨基酸和蛋白质的浓度。这些结果表明d -Val，d -Leu和d-Cys调节细胞代谢并刺激根生长。在这里，我们提供重要的信息，以了解d -AA在根植物生长调节中的作用。