Aluminum-activated malate transporter family member CsALMT6 mediates fluoride resistance in tea plants (Camellia sinensis)

IF 8.7 1区 农林科学 Q1 Agricultural and Biological Sciences Horticulture Research Pub Date : 2024-12-12 DOI:10.1093/hr/uhae353
Qinghui Li, Ruiming Zhang, Xinlong Hu, Dejiang Ni, Yuqiong Chen, Mingle Wang
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Abstract

Tea plant is a fluoride (F)-hyperaccumulator, which poses a potential threat to human health via tea consumption. Reducing F accumulation in fresh tea leaves is crucial for enhancing the safety of tea production at its source. This study aims to isolate novel genes responsible for F accumulation or transport in tea plants. We identified an aluminum (Al)-activated malate transporter gene, CsALMT6, which was hypothesized to be a candidate for differential F accumulation in Camellia sinensis, by employing a combination of transcriptome-wide association study (TWAS) and genome-wide identification of the CsALMT gene family. CsALMT6 exhibited high expression levels in old leaves, and its expression was significantly upregulated in tea plants subjected to F-stress conditions. Furthermore, heterologous expression of CsALMT6 in yeast, Arabidopsis, and Populus conferred F tolerance. However, the expression of F-tolerant hub genes, CsFEX1 and CsFEX2, remained unaffected in CsALMT6-silenced tea plants. Additionally, under F toxicity conditions, the transcription of CsALMT6 was negatively associated with F accumulation in tea plants. In conclusion, CsALMT6 plays a vital role in reducing F accumulation in C. sinensis, thus conferring F tolerance to plant cells.
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铝激活的苹果酸转运体家族成员CsALMT6介导茶树(Camellia sinensis)的氟抗性
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来源期刊
Horticulture Research
Horticulture Research Biochemistry, Genetics and Molecular Biology-Biochemistry
CiteScore
11.20
自引率
6.90%
发文量
367
审稿时长
20 weeks
期刊介绍: Horticulture Research, an open access journal affiliated with Nanjing Agricultural University, has achieved the prestigious ranking of number one in the Horticulture category of the Journal Citation Reports ™ from Clarivate, 2022. As a leading publication in the field, the journal is dedicated to disseminating original research articles, comprehensive reviews, insightful perspectives, thought-provoking comments, and valuable correspondence articles and letters to the editor. Its scope encompasses all vital aspects of horticultural plants and disciplines, such as biotechnology, breeding, cellular and molecular biology, evolution, genetics, inter-species interactions, physiology, and the origination and domestication of crops.
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