您好，欢迎访问中国热带农业科学院 机构知识库！
中国热带农业科学院机构知识库

全部

  • 全部
  • 标题
  • 学者
  • 机构
  • 关键词

Mechanisms of Chitosan Nanoparticles in the Regulation of Cold Stress Resistance in Banana Plants

文献类型： 外文期刊

作者： Wang, Anbang 1 ; Li, Jingyang 1 ; AL-Huqail, Arwa Abdulkreem 2 ; AL-Harbi, Mohammad S. 3 ; Ali, Esmat F. 3 ; Wang, 1 ;

作者机构： 1.Chinese Acad Trop Agr Sci CATAS, Hainan Banana Hlth Seedling Propagat Engn Res Ctr, Haikou Expt Stn, Haikou 571101, Hainan, Peoples R China

2.Princess Nourah Bint Abdulrahman Univ, Coll Sci, Dept Biol, Riyadh 133248824, Saudi Arabia

3.Taif Univ, Coll Sci, Dept Biol, At Taif 21944, Saudi Arabia

4.Al Azhar Univ, Fac Agr, Dept Soils & Water, Assiut Branch, Assiut 71524, Egypt

5.Agr Res Ctr, Field Crops Res Inst, Giza 12112, Egypt

6.Assiut Univ, Fac Agr, Dept Soils & Water, Assiut 71526, Egypt

关键词： chitosan nanoparticles; chilling tolerance; antioxidant enzyme activities; membrane damage traits

期刊名称：NANOMATERIALS （ 影响因子：5.076； 五年影响因子：5.346 ）

ISSN：

年卷期： 2021 年 11 卷 10 期

页码：

收录情况： SCI

摘要： Exposure of banana plants, one of the most important tropical and subtropical plants, to low temperatures causes a severe drop in productivity, as they are sensitive to cold and do not have a strong defense system against chilling. Therefore, this study aimed to improve the growth and resistance to cold stress of banana plants using foliar treatments of chitosan nanoparticles (CH-NPs). CH-NPs produced by nanotechnology have been used to enhance tolerance and plant growth under different abiotic stresses, e.g., salinity and drought; however, there is little information available about their effects on banana plants under cold stress. In this study, banana plants were sprayed with four concentrations of CH-NPs-i.e., 0, 100, 200, and 400 mg L-1 of deionized water-and a group that had not been cold stressed or undergone CH-NP treatment was used as control. Banana plants (Musa acuminata var. Baxi) were grown in a growth chamber and exposed to cold stress (5 & DEG;C for 72 h). Foliar application of CH-NPs caused significant increases (p < 0.05) in most of the growth parameters and in the nutrient content of the banana plants. Spraying banana plants with CH-NPs (400 mg L-1) increased the fresh and dry weights by 14 and 41%, respectively, compared to the control. A positive correlation was found between the foliar application of CH-NPs, on the one hand, and photosynthesis pigments and antioxidant enzyme activities on the other. Spraying banana plants with CH-NPs decreased malondialdehyde (MDA) and reactive oxygen species (ROS), i.e., hydrogen peroxide (H2O2), hydroxyl radicals ((OH)-O-& BULL;), and superoxide anions (O-2(& BULL;-)). CH-NPs (400 mg L-1) decreased MDA, H2O2, (OH)-O-& BULL;, and O-2(& BULL;-) by 33, 33, 40, and 48%, respectively, compared to the unsprayed plants. We hypothesize that CH-NPs increase the efficiency of banana plants in the face of cold stress by reducing the accumulation of reactive oxygen species and, in consequence, the degree of oxidative stress. The accumulation of osmoprotectants (soluble carbohydrates, proline, and amino acids) contributed to enhancing the cold stress tolerance in the banana plants. Foliar application of CH-NPs can be used as a sustainable and economically feasible approach to achieving cold stress tolerance.

  • 相关文献
作者其他论文 更多>>
置顶
购物车
反馈

© 京ICP备09089781号-29 主办单位：中国热带农业科学院

学术资源： 中国农业科学院 农业专业知识服务系统 农科联盟资源共建共享平台 中国农业科技文献与信息服务平台 中国农业期刊集成服务平台