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N-acetyltransferase gene NATA1 from Vigna angularis confers resistance against Uromyces vignae infection
Physiological and Molecular Plant Pathology ( IF 2.7 ) Pub Date : 2021-01-01 , DOI: 10.1016/j.pmpp.2020.101585
Yin Lihua , Sun Weina , Xu Jing , Ke Xiwang , Xu Xiaodan , Guo Yongxia , Zuo Yuhu

ABSTRACT N-acetyltransferases are part of the general control non-repressible 5 (GCN5)-related N-acetyltransferases superfamily (GNATs), which play important roles in plant response to biotic and abiotic stresses. In this study, VaNATA1, the N-acetyltransferase gene from Vigna angularis, was separately obtained from genomic DNA (gDNA) and complementary DNA (cDNA) samples using PCR. The two sequences amplified from gDNA and cDNA were exactly the same and were composed of 552 nucleotides, indicating that there is no intron insert in VaNATA1. Conserved domain prediction and phylogenic analysis revealed that VaNATA1 belongs to the spermine/spermidine N-acetyltransferases (SSAT) family of GNATs. Expression of VaNATA1 was analyzed in varieties with different susceptibility to the rust fungus Uromyce vignae. VaNATA1 was rapidly induced in the rust-resistant cultivar at 12 hours post inoculation (hpi), and then was maintained at a high level throughout the whole infection process. In the susceptible cultivar, there were no obvious changes in expression of VaNATA1 in response to U. vignae infection. The expression of VaNATA1 was further analyzed in the susceptible cultivar inoculated with U. vignae after pretreatment with 1-aminocyclopropane-1-coumaric acid (ACC), and the results showed that ACC significantly induced resistance in adzuki bean and increased the expression of VaNATA1 at 12, 48, and 120 hpi. These results suggested that VaNATA1 is a positive regulator of the defense system in V. angularis during response to U. vignae infection.

中文翻译:

来自 Vigna angularis 的 N-乙酰转移酶基因 NATA1 赋予对 Uromyces vignae 感染的抗性

摘要 N-乙酰转移酶是一般控制非抑制性 5 (GCN5) 相关 N-乙酰转移酶超家族 (GNAT) 的一部分,在植物对生物和非生物胁迫的响应中起重要作用。在这项研究中,来自 Vigna angularis 的 N-乙酰转移酶基因 VaNATA1 是使用 PCR 从基因组 DNA (gDNA) 和互补 DNA (cDNA) 样本中分别获得的。从gDNA和cDNA扩增出来的两条序列完全相同,由552个核苷酸组成,说明VaNATA1中没有内含子插入。保守域预测和系统发育分析表明,VaNATA1 属于 GNAT 的精胺/亚精胺 N-乙酰转移酶 (SSAT) 家族。VaNATA1 在对锈菌 Uromyce vignae 具有不同易感性的品种中的表达进行了分析。VaNATA1在接种后12小时(hpi)在抗锈病品种中被快速诱导,然后在整个感染过程中保持在高水平。在易感品种中,VaNATA1 的表达响应 U. vignae 感染没有明显变化。进一步分析了用1-氨基环丙烷-1-香豆酸(ACC)预处理后接种U. vignae的感病品种中VaNATA1的表达情况,结果表明ACC显着诱导了小豆的抗性并增加了VaNATA1的表达。 12、48 和 120 hpi。这些结果表明,VaNATA1 是 V. angularis 在响应 U. vignae 感染期间防御系统的正调节剂。然后在整个感染过程中一直保持在高水平。在易感品种中,VaNATA1 的表达响应 U. vignae 感染没有明显变化。进一步分析了用1-氨基环丙烷-1-香豆酸(ACC)预处理后接种U. vignae的感病品种中VaNATA1的表达情况,结果表明ACC显着诱导了小豆的抗性并增加了VaNATA1的表达。 12、48 和 120 hpi。这些结果表明,VaNATA1 是 V. angularis 在响应 U. vignae 感染期间防御系统的正调节剂。然后在整个感染过程中一直保持在高水平。在易感品种中,VaNATA1 的表达响应 U. vignae 感染没有明显变化。进一步分析了用1-氨基环丙烷-1-香豆酸(ACC)预处理后接种U. vignae的感病品种中VaNATA1的表达情况,结果表明ACC显着诱导了小豆的抗性并增加了VaNATA1的表达。 12、48 和 120 hpi。这些结果表明,VaNATA1 是 V. angularis 在响应 U. vignae 感染期间防御系统的正调节剂。进一步分析了用1-氨基环丙烷-1-香豆酸(ACC)预处理后接种U. vignae的感病品种中VaNATA1的表达情况,结果表明ACC显着诱导了小豆的抗性并增加了VaNATA1的表达。 12、48 和 120 hpi。这些结果表明,VaNATA1 是 V. angularis 在响应 U. vignae 感染期间防御系统的正调节剂。进一步分析了用1-氨基环丙烷-1-香豆酸(ACC)预处理后接种U. vignae的感病品种中VaNATA1的表达情况,结果表明ACC显着诱导了小豆的抗性并增加了VaNATA1的表达。 12、48 和 120 hpi。这些结果表明,VaNATA1 是 V. angularis 在响应 U. vignae 感染期间防御系统的正调节剂。
更新日期:2021-01-01
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