Differentially expressed genes in Jojoba (Simmondsia chinensis) when subjected to water-stress

IF 5.4 Q1 PLANT SCIENCES Current Plant Biology Pub Date : 2023-12-19 DOI:10.1016/j.cpb.2023.100311
Othman Al-Dossary , Agnelo Furtado , Ardashir KharabianMasouleh , Bader Alsubaie , Ibrahim Al-Mssallem , Robert J. Henry
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Abstract

Jojoba (Simmondsia chinensis) is a desert shrub with an ability to survive in extremely arid environments. The exceptional drought tolerance of jojoba includes traits that could be useful in developing drought tolerant crop plants. This study characterized changes in gene expression in jojoba under water-stress during a controlled-environment experiment. A large number of transcripts (10,936) were identified as differentially expressed under contrasting water stress conditions. These included transcripts corresponding to antioxidant activity-related genes such as superoxide dismutase, defense response genes such as Pathogenesis-Related 4 (PR4), water molecule bio-channels such as aquaporins, cell membrane protectants such as Late Embryogenesis Abundant (LEA), and growth regulators such as 1-aminocyclopropane-1-carboxylic acid (ACC). A total of 880 novel transcripts were identified as representing possible novel genes associated with jojoba subjected to water stress. There were also many transcripts linked to transcriptional regulation that were expressed in response to water-stress in jojoba. Many male-specific transcripts corresponding to stress-related genes and transcription regulators were differentially expressed under water-stress with 1928 differentially expressed transcripts that aligned to the two Y chromosome-specific regions Y1 and Y2. The water-stress related genes detected may help explain the drought tolerance of jojoba and provide a valuable source of genes for exploitation in providing tolerance to water stress in other species.

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荷荷巴(Simmondsia chinensis)在水胁迫下的差异表达基因
荷荷巴(Simmondsia chinensis)是一种沙漠灌木,能够在极端干旱的环境中生存。荷荷巴的特殊耐旱性包括可用于开发耐旱作物的特征。本研究通过受控环境实验描述了荷荷巴在水胁迫下的基因表达变化。在不同的水分胁迫条件下,大量转录本(10936 个)被鉴定为差异表达。这些转录本包括与抗氧化活性相关的基因(如超氧化物歧化酶)、防御反应基因(如病原相关 4 (PR4))、水分子生物通道(如水蒸气蛋白)、细胞膜保护剂(如胚胎发生后期丰度 (LEA))以及生长调节剂(如 1-氨基环丙烷-1-羧酸 (ACC))相对应的转录本。共鉴定出 880 个新转录本,这些转录本代表了与遭受水胁迫的荷荷巴可能相关的新基因。此外,还有许多与转录调控有关的转录本在荷荷巴的水胁迫反应中表达。许多与胁迫相关基因和转录调节因子相对应的雄性特异性转录本在水胁迫下有差异表达,其中 1928 个差异表达的转录本与两个 Y 染色体特异性区域 Y1 和 Y2 一致。检测到的与水胁迫相关的基因可能有助于解释荷荷巴的耐旱性,并为其他物种提供耐水胁迫的宝贵基因来源。
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来源期刊
Current Plant Biology
Current Plant Biology Agricultural and Biological Sciences-Plant Science
CiteScore
10.90
自引率
1.90%
发文量
32
审稿时长
50 days
期刊介绍: Current Plant Biology aims to acknowledge and encourage interdisciplinary research in fundamental plant sciences with scope to address crop improvement, biodiversity, nutrition and human health. It publishes review articles, original research papers, method papers and short articles in plant research fields, such as systems biology, cell biology, genetics, epigenetics, mathematical modeling, signal transduction, plant-microbe interactions, synthetic biology, developmental biology, biochemistry, molecular biology, physiology, biotechnologies, bioinformatics and plant genomic resources.
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