Molecular cloning, expression profiles, characterization and function of a novel arginine decarboxylase gene (HbADC2) in Hevea brasiliensis
文献类型： 外文期刊
作者： Deng, Zhi 1 ; Hou, Lanfei 1 ; Xia, Zhihui 6 ; Li, Yao 6 ; Dai, Longjun 1 ; Men, Zhonghua 5 ; Li, Dejun 1 ;
作者机构： 1.Rubber Res Inst, Chinese Acad Trop Agr Sci, Natl Key Lab Trop Crop Breeding, Sanya 572024, Hainan, Peoples R China
2.Chinese Acad Trop Agr Sci, Rubber Res Inst, Natl Key Lab Trop Crop Breeding, Haikou 571101, Hainan, Peoples R China
3.Chinese Acad Trop Agr Sci, Sanya Res Inst, Sanya 572025, Hainan, Peoples R China
4.Chinese Acad Trop Agr Sci, Rubber Res Inst, Minist Agr & Rural Affairs, Key Lab Biol & Genet Resources Rubber Tree, Haikou 571101, Hainan, Peoples R China
5.Baotou Teachers Coll Sci Rd, Baotou 014030, Inner Mongolia, Peoples R China
6.Hainan Univ, Sanya Nanfan Res Inst, Coll Trop Crops, Sanya 570228, Hainan, Peoples R China
7.Chinese Acad Trop Agr Sci, Sanya Res Inst, Natl Key Lab Trop Crop Breeding, Sanya 572025, Hainan, Peoples R China
关键词： Arginine decarboxylase (ADC); Rubber tree; Polyamine; MV-induced oxidative stress; Putrescine (Put)
期刊名称：INDUSTRIAL CROPS AND PRODUCTS （ 影响因子：5.9； 五年影响因子：6.0 ）
ISSN： 0926-6690
年卷期： 2024 年 211 卷
页码：
收录情况： SCI
摘要： As a major industrial raw material, natural rubber (NR) is also an important strategic material. Commercial NR is almost exclusively produced from rubber tree latex at present. Given that polyamines (PAs), especially putrescine (Put), can accelerate NR biosynthesis by scavenging ROS in laticifers, arginine decarboxylase (ADC) is likely involved in ROS balance by regulating Put content. In the present study, HbADC2, a novel ADC gene, was cloned and analyzed in detail. HbADC2 were expressed in different tissues and developmental stages of leaves, suggesting that HbADC2 was involved in rubber tree growth and development. As a multifunctional gene, HbADC2 was also modulated by several stresses and hormone treatments. Put contents were consistent with the expression levels of HbADC2 in latex between healthy rubber tree and tapping panel dryness (TPD)-affected one, implying that HbADC2 was likely associated with Put biosynthesis in rubber tree. In addition, tobacco plants overexpressing HbADC2 can enhance tolerance to methyl viologen (MV)-induced oxidative stress by increasing Put biosynthesis to decrease hydrogen peroxide (H2O2) content. Taken together, our results suggest that HbADC2 not only is related to rubber tree growth, TPD, development, stress and hormone responses, but also enhances the tolerance to MV-induced oxidative stress by increasing Put biosynthesis in tobacco plants.
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