Linbo Liu , Aike Bao , Hujun Li , Wanpeng Bai , Haishuang Liu , Ye Tian , Yiying Zhao , Fangchen Xia , Suomin Wang
{"title":"ZxABCG11在苜蓿中的过表达通过增加表皮蜡的沉积增强苜蓿对干旱和高温的耐受性","authors":"Linbo Liu , Aike Bao , Hujun Li , Wanpeng Bai , Haishuang Liu , Ye Tian , Yiying Zhao , Fangchen Xia , Suomin Wang","doi":"10.1016/j.cj.2022.11.007","DOIUrl":null,"url":null,"abstract":"<div><p>Drought and heat stresses cause yield losses in alfalfa, a forage crop cultivated worldwide. Improving its drought and heat tolerance is desirable for maintaining alfalfa productivity in hot, arid regions. Cuticular wax forms a protective barrier on aerial surfaces of land plants against environmental stresses. <em>ABCG11</em> encodes an ATP binding cassette (ABC) transporter that functions in the cuticular wax transport pathway. In this study, <em>ZxABCG11</em> from the xerophyte <em>Zygophyllum xanthoxylum</em> was introduced into alfalfa by <em>Agrobacterium tumefaciens</em>-mediated transformation. Compared to the wild type (WT), transgenic alfalfa displayed faster growth, higher wax crystal density, and thicker cuticle on leaves under normal condition. Under either drought or heat treatment in greenhouse conditions, the plant height and shoot biomass of transgenic lines were significantly higher than those of the WT. Transgenic alfalfa showed excellent growth and 50% greater hay yield than WT under field conditions in a hot, arid region. Overexpression of <em>ZxABCG11</em> up-regulated wax-related genes and resulted in more cuticular wax deposition, which contributed to reduction of cuticle permeability and thus increased water retention and photosynthesis capacity of transgenic alfalfa. Thus, overexpression of <em>ZxABCG11</em> can simultaneously improve biomass yield, drought and heat tolerance in alfalfa by increasing cuticular wax deposition. Our study provides a promising avenue for developing novel forage cultivars suitable for planting in hot, arid, marginal lands.</p></div>","PeriodicalId":10790,"journal":{"name":"Crop Journal","volume":null,"pages":null},"PeriodicalIF":6.0000,"publicationDate":"2023-08-01","publicationTypes":"Journal Article","fieldsOfStudy":null,"isOpenAccess":false,"openAccessPdf":"","citationCount":"5","resultStr":"{\"title\":\"Overexpression of ZxABCG11 from Zygophyllum xanthoxylum enhances tolerance to drought and heat in alfalfa by increasing cuticular wax deposition\",\"authors\":\"Linbo Liu , Aike Bao , Hujun Li , Wanpeng Bai , Haishuang Liu , Ye Tian , Yiying Zhao , Fangchen Xia , Suomin Wang\",\"doi\":\"10.1016/j.cj.2022.11.007\",\"DOIUrl\":null,\"url\":null,\"abstract\":\"<div><p>Drought and heat stresses cause yield losses in alfalfa, a forage crop cultivated worldwide. Improving its drought and heat tolerance is desirable for maintaining alfalfa productivity in hot, arid regions. Cuticular wax forms a protective barrier on aerial surfaces of land plants against environmental stresses. <em>ABCG11</em> encodes an ATP binding cassette (ABC) transporter that functions in the cuticular wax transport pathway. In this study, <em>ZxABCG11</em> from the xerophyte <em>Zygophyllum xanthoxylum</em> was introduced into alfalfa by <em>Agrobacterium tumefaciens</em>-mediated transformation. Compared to the wild type (WT), transgenic alfalfa displayed faster growth, higher wax crystal density, and thicker cuticle on leaves under normal condition. Under either drought or heat treatment in greenhouse conditions, the plant height and shoot biomass of transgenic lines were significantly higher than those of the WT. Transgenic alfalfa showed excellent growth and 50% greater hay yield than WT under field conditions in a hot, arid region. Overexpression of <em>ZxABCG11</em> up-regulated wax-related genes and resulted in more cuticular wax deposition, which contributed to reduction of cuticle permeability and thus increased water retention and photosynthesis capacity of transgenic alfalfa. Thus, overexpression of <em>ZxABCG11</em> can simultaneously improve biomass yield, drought and heat tolerance in alfalfa by increasing cuticular wax deposition. Our study provides a promising avenue for developing novel forage cultivars suitable for planting in hot, arid, marginal lands.</p></div>\",\"PeriodicalId\":10790,\"journal\":{\"name\":\"Crop Journal\",\"volume\":null,\"pages\":null},\"PeriodicalIF\":6.0000,\"publicationDate\":\"2023-08-01\",\"publicationTypes\":\"Journal Article\",\"fieldsOfStudy\":null,\"isOpenAccess\":false,\"openAccessPdf\":\"\",\"citationCount\":\"5\",\"resultStr\":null,\"platform\":\"Semanticscholar\",\"paperid\":null,\"PeriodicalName\":\"Crop Journal\",\"FirstCategoryId\":\"97\",\"ListUrlMain\":\"https://www.sciencedirect.com/science/article/pii/S2214514122002586\",\"RegionNum\":1,\"RegionCategory\":\"农林科学\",\"ArticlePicture\":[],\"TitleCN\":null,\"AbstractTextCN\":null,\"PMCID\":null,\"EPubDate\":\"\",\"PubModel\":\"\",\"JCR\":\"Q1\",\"JCRName\":\"AGRONOMY\",\"Score\":null,\"Total\":0}","platform":"Semanticscholar","paperid":null,"PeriodicalName":"Crop Journal","FirstCategoryId":"97","ListUrlMain":"https://www.sciencedirect.com/science/article/pii/S2214514122002586","RegionNum":1,"RegionCategory":"农林科学","ArticlePicture":[],"TitleCN":null,"AbstractTextCN":null,"PMCID":null,"EPubDate":"","PubModel":"","JCR":"Q1","JCRName":"AGRONOMY","Score":null,"Total":0}
Overexpression of ZxABCG11 from Zygophyllum xanthoxylum enhances tolerance to drought and heat in alfalfa by increasing cuticular wax deposition
Drought and heat stresses cause yield losses in alfalfa, a forage crop cultivated worldwide. Improving its drought and heat tolerance is desirable for maintaining alfalfa productivity in hot, arid regions. Cuticular wax forms a protective barrier on aerial surfaces of land plants against environmental stresses. ABCG11 encodes an ATP binding cassette (ABC) transporter that functions in the cuticular wax transport pathway. In this study, ZxABCG11 from the xerophyte Zygophyllum xanthoxylum was introduced into alfalfa by Agrobacterium tumefaciens-mediated transformation. Compared to the wild type (WT), transgenic alfalfa displayed faster growth, higher wax crystal density, and thicker cuticle on leaves under normal condition. Under either drought or heat treatment in greenhouse conditions, the plant height and shoot biomass of transgenic lines were significantly higher than those of the WT. Transgenic alfalfa showed excellent growth and 50% greater hay yield than WT under field conditions in a hot, arid region. Overexpression of ZxABCG11 up-regulated wax-related genes and resulted in more cuticular wax deposition, which contributed to reduction of cuticle permeability and thus increased water retention and photosynthesis capacity of transgenic alfalfa. Thus, overexpression of ZxABCG11 can simultaneously improve biomass yield, drought and heat tolerance in alfalfa by increasing cuticular wax deposition. Our study provides a promising avenue for developing novel forage cultivars suitable for planting in hot, arid, marginal lands.
Crop JournalAgricultural and Biological Sciences-Agronomy and Crop Science
CiteScore
9.90
自引率
3.00%
发文量
638
审稿时长
41 days
期刊介绍:
The major aims of The Crop Journal are to report recent progresses in crop sciences including crop genetics, breeding, agronomy, crop physiology, germplasm resources, grain chemistry, grain storage and processing, crop management practices, crop biotechnology, and biomathematics.
The regular columns of the journal are Original Research Articles, Reviews, and Research Notes. The strict peer-review procedure will guarantee the academic level and raise the reputation of the journal. The readership of the journal is for crop science researchers, students of agricultural colleges and universities, and persons with similar academic levels.