Molecular and Physiological Responses of Kiwifruit to Abiotic and Biotic Stresses

A special issue of Plants (ISSN 2223-7747). This special issue belongs to the section "Plant Response to Abiotic Stress and Climate Change".

Deadline for manuscript submissions: 31 March 2025 | Viewed by 1607

Special Issue Editors


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Guest Editor
1. Zhengzhou Fruit Research Institute, Chinese Academy of Agricultural Sciences, Zhengzhou 450009, China
2. Economic Crop Research Institute, Henan Academy of Agricultural Sciences, Zhengzhou 450002, China
Interests: kiwifruit

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Guest Editor
Center for Excellence in Molecular Plant Sciences, Chinese Academy of Sciences, Shanghai 200030, China
Interests: kiwifruit; breeding; plant biotechnology; plant genetics; plant molecular biology

Special Issue Information

Dear Colleagues,

Actinidia Lindl., also called “Mihoutao” in China, is one of the four most successful fruit trees that were artificially domesticated and cultivated from the wild in the 20th century. The genus Actinidia originated in China; however, currently, there are 23 countries that produce kiwifruit. China, Italy, New Zealand, Iran, Greece and Chile account for 94% of the world's kiwifruit production. Although several kiwifruit varieties, such as ‘Xuxiang’, ‘Miliang 1’, ‘Cuixiang’, ‘Zhongmi2’, ‘Hayward’, ‘Jintao’, ‘G3’, ‘Hongyang’, and ‘Donghong’, have become the main varieties grown by the industry, further breeding work is currently underway. In recent years, the prevalence of KVDS (Kiwifruit Vine Decline Syndrome) and PSA (Pseudomonas syringae pv. actinidiae) in multiple countries has seriously constrained the healthy development of the industry. Breeders and producers are increasingly paying attention to resistant varieties (rootstocks and scions) with outstanding comprehensive traits, especially resistance to environmental stress and pathogenic bacteria. This Special Issue will highlight the molecular and physiological responses of kiwifruit to abiotic (such as salinity, alkali, waterlogging, drought, etc.) and biotic (such as PSA, rot, etc.) stresses, especially resource identification, gene discovery, resistance mechanism, rootstock–scion interaction, etc.

Dr. Yunpeng Zhong
Dr. Muhammad Abid
Guest Editors

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Keywords

  • kiwifruit
  • abiotic stress
  • biotic stress
  • physiological response
  • resistance mechanism

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Published Papers (1 paper)

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Research

16 pages, 7318 KiB  
Article
Overexpression of the Kiwifruit Transcription Factor AaMYB44 Decreases the Cold Tolerance in Arabidopsis thaliana
by Yihang Li, Miaomiao Lin, Qina Zhang, Peng Zhang, Zhenzhen Zhang, Yukuo Li, Leiming Sun, Sumei Li, Congcong Li, Dixin Chen and Xiujuan Qi
Plants 2024, 13(22), 3126; https://doi.org/10.3390/plants13223126 - 6 Nov 2024
Viewed by 908
Abstract
Cold stress is one of the main abiotic stresses that affect the development and growth of kiwifruit (Actinidia arguta). Herein, we analyzed the transcriptomic data of A. arguta dormant shoots in response to low-temperature treatment, identified 52 MYB genes, and constructed a [...] Read more.
Cold stress is one of the main abiotic stresses that affect the development and growth of kiwifruit (Actinidia arguta). Herein, we analyzed the transcriptomic data of A. arguta dormant shoots in response to low-temperature treatment, identified 52 MYB genes, and constructed a phylogenetic tree based on the encoded protein sequences. Then, the effect of one MYB gene on cold tolerance was analyzed. This gene had an open reading frame of 837 bp long and encoded 279 amino acids. Sequence alignment and phylogenetic analysis revealed that this gene belongs to the R2R3-MYB family and was named AaMYB44 based on its homology to other MYB family members. Quantitative real-time PCR revealed that AaMYB44 expression was significantly induced by low temperatures but exhibited the opposite trend in cold-tolerant genotypes. Subcellular localization assays revealed the nuclear localization of the AaMYB44 protein. Furthermore, AaMYB44 was transformed into Arabidopsis thaliana (A. thaliana) via inflorescence infection, and physiological and biochemical tests revealed that the cold resistance and antioxidant capacity of the transgenic A. thaliana were lower than those of wild-type plants. Overall, AaMYB44 might play a negative regulatory role in response to cold stress, providing new insight into the mechanism of cold tolerance. Full article
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