Article(id=1277255462278005244, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277255461552390652, articleNumber=null, orderNo=null, doi=10.3969/j.issn.1000-2561.2026.03.001, pmid=null, cstr=null, oa=null, hot=null, price=null, onlineType=0, articleFormat=0, articleType=null, articleTypeStr=null, receivedDate=1764172800000, receivedDateStr=2025-11-27, revisedDate=null, revisedDateStr=null, acceptedDate=1765209600000, acceptedDateStr=2025-12-09, onlineDate=1782451032465, onlineDateStr=2026-06-26, pubDate=1774368000000, pubDateStr=2026-03-25, doiRegisterDate=null, doiRegisterDateStr=null, onlineIssueDate=1782451032465, onlineIssueDateStr=2026-06-26, onlineJustAcceptDate=null, onlineJustAcceptDateStr=null, onlineFirstDate=null, onlineFirstDateStr=null, sourceXml=null, magXml=null, createTime=1782451032465, creator=13701087609, updateTime=1782451032465, updator=13701087609, issue=Issue{id=1277255461552390652, tenantId=1146029695717560320, journalId=1235980609244409860, year='2026', volume='47', issue='3', pageStart='553', pageEnd='823', issueExtLink='null', onlineDate='null', pubDate='1774368000000', pubDateStr='2026-03-25', beforeIssueId=null, nextIssueId=null, price=null, status=1, issueComplete=1, articleOrder=1, issueType=1, specialIssue=null, createTime=1782451032293, creator='13701087609', updateTime=1782451557265, updator='13701087609', preIssue=null, nextIssue=null, articleTotal=null, ext={EN=IssueExt(id=1277257664249852732, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277255461552390652, language=EN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=), CN=IssueExt(id=1277257664249852733, tenantId=1146029695717560320, journalId=1235980609244409860, issueId=1277255461552390652, language=CN, specialIssueTitle=, coverIllustrator=null, specialIssueEditor=, specialIssueAbout=)}, issueFiles=null, downloadFileDto=null}, startPage=553, endPage=566, ext={EN=ArticleExt(id=1277255462559023614, articleId=1277255462278005244, tenantId=1146029695717560320, journalId=1235980609244409860, language=EN, title=Genome-wide Identification of the SsPYL Gene Family and Analysis of the Expression Patterns under Drought Stress in Saccharum spontaneum L., columnId=1236256430337085821, journalTitle=Chinese Journal of Tropical Crops, columnName=Omics & Biotechnology, runingTitle=null, highlight=null, articleAbstract=

The PYR/PYL/RCAR (PYL) gene family (Pyrabactin Resistance 1/PYR1-Like/Regulatory Component of ABA Receptor), as core receptors of abscisic acid (ABA), play a pivotal regulatory role in the signaling pathways of plant responses to abiotic stresses such as drought. Saccharum spontaneum L. (wild sugarcane), an important wild relative for sugarcane stress-resistant breeding, harbors abundant drought-tolerant genetic resources. However, systematic identification and functional analysis of its PYL gene family remain unreported to date. Based on the S. spontaneum genome data (Saccharum spontaneum Np-X2021), the study identified members of the SsPYL gene family using bioinformatics approaches, and systematically analyzed the physicochemical properties, chromosomal localization, phylogenetic relationships, gene structures, conserved motifs, and cis-acting elements in promoters. Additionally, quantitative real-time PCR (qRT-PCR) was employed to investigate the expression patterns of core members under drought stress. The results showed that 32 SsPYL genes, designated as SsPYL1 to SsPYL32, were identified in the S. spontaneum genome. The encoded proteins ranged in length from 149 to 385 amino acids, with most being acidic and hydrophilic proteins primarily localized in the cytoplasm. The secondary structure was dominated by α-helices and random coils. Furthermore, SsPYLs exhibited uneven distribution across chromosomes, and segmental duplication was the dominant mechanism driving family expansion. A total of 54 pairs of syntenic genes were identified between SsPYLs and rice OsPYL genes, reflecting the evolutionary conservation of this family among monocotyledonous plants. Phylogenetic analysis clustered the 32 SsPYLs into three subfamilies, with members of the same subfamily sharing similar conserved motif compositions and gene structures. All SsPYL proteins contained the signature PYR_PYL_RCAR_like domain. The promoter regions of SsPYL genes were enriched in hormone-responsive and abiotic stress-related cis-acting elements, such as ABRE (ABA-responsive element), ARE (anaerobic responsive element), and LTR (low-temperature responsive element). Under drought stress, the expression levels of eight SsPYL genes (SsPYL1, SsPYL3, SsPYL4, SsPYL6, SsPYL8, SsPYL14, SsPYL19 and SsPYL24) were extremely significantly upregulated (P<0.01), among which SsPYL8, SsPYL14 and SsPYL19 showed more than 5-fold upregulation. The genes are thus speculated to be key candidate genes regulating drought tolerance in S. spontaneum. The study represents the first systematic characterization of the molecular features and drought-responsive patterns of the SsPYL gene family in S. spontaneum. It would provide a theoretical basis for further exploring the functional mechanisms in ABA-mediated drought stress signaling pathways and offer important gene targets for the genetic improvement of drought tolerance in sugarcane.

, authors=null, authorsList=nanxi XU-QU, Yujie WANG, Shuying CHEN, Lilian HE, Fusheng LI, authorCompany=null, correspAuthors=Lilian HE, Fusheng LI, authorNote=null, correspAuthorsNote=null, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=null, magXml=null, pdfUrl=null, pdf=null, pdfFileSize=null, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=null, mapNumber=null, fund=null), CN=ArticleExt(id=1277255462869402112, articleId=1277255462278005244, tenantId=1146029695717560320, journalId=1235980609244409860, language=CN, title=割手密SsPYL基因家族的全基因组鉴定及干旱胁迫下的表达模式分析, columnId=1236256430517440904, journalTitle=热带作物学报, columnName=组学与生物技术, runingTitle=null, highlight=null, articleAbstract=

PYR/PYL/RCAR（PYL）基因家族作为脱落酸（ABA）的核心受体，在植物响应干旱等非生物胁迫的信号通路中发挥关键调控作用。割手密（Saccharum spontaneum L．）作为甘蔗抗逆育种的重要野生近缘种，蕴藏丰富的抗旱遗传资源，但目前其PYL基因家族的系统鉴定与功能分析尚未见报道。本研究基于割手密基因组数据（Saccharum spontaneum Np-X 2021），通过生物信息学方法鉴定SsPYL基因家族成员，系统解析其理化性质、染色体定位、进化关系、基因结构、保守基序及启动子顺式作用元件，并结合实时荧光定量PCR（qRT-PCR）技术分析其核心成员在干旱胁迫下的表达模式。结果显示，在割手密基因组中鉴定到32个SsPYL基因，命名为SsPYL1~SsPYL32，其编码蛋白氨基酸长度为149~385个，多数为酸性亲水性蛋白，主要定位于细胞质，二级结构以α-螺旋和无规则卷曲为主。此外，SsPYLs在染色体上呈不均匀分布，片段重复是其家族扩张的主导机制，且与水稻OsPYL基因家族存在54对共线性基因，体现单子叶植物中该家族的进化保守性。系统进化分析结果显示，32个SsPYL分为3个亚家族，同一亚家族成员具有相似的保守基序组成和基因结构，所有成员均含PYR_PYL_RCAR_like标志性结构域。SsPYL基因启动子区富含ABRE、ARE、LTR等激素响应和非生物胁迫相关顺式作用元件；干旱胁迫下，8个SsPYL基因SsPYL1、SsPYL3、SsPYL4、SsPYL6、SsPYL8、SsPYL14、SsPYL19和SsPYL24的表达量极显著上调（P<0.01），其中SsPYL8、SsPYL14、SsPYL19上调幅度超过5倍，推测其为割手密抗旱调控的关键候选基因。本研究系统解析割手密SsPYL基因家族的分子特征与干旱响应模式，为深入探究其在ABA介导的抗旱信号通路中的功能机制提供理论依据，同时为甘蔗抗旱性遗传改良提供重要基因靶点。

, authors=, authorsList=徐屈楠茜, 王誉洁, 陈疏影, 何丽莲, 李富生, authorCompany=null, correspAuthors=何丽莲, 李富生, authorNote=null, correspAuthorsNote=, copyrightStatement=null, copyrightOwner=null, extLink=null, articleAbsUrl=null, sourceXml=caHwZaFrn7GnVEz8iZIbXg==, magXml=cAYwt2IYlm5+BJkCEUn4qA==, pdfUrl=null, pdf=9IsPAOzgS809w/wf7BIuTA==, pdfFileSize=8258154, pdfExtLink=null, richHtmlUrl=null, mobilePdfUrl=null, reviewReport=null, pdfFirstPage=null, abstractGraph=null, abstractGraphContent=null, abstractVideo=null, citation=null, cebUrl=null, magXmlContent=Mp8/5Cch5NwNfqiWZHMeNw==, mapNumber=null, fund=null)}, authors=[Author(id=1277255464698118670, tenantId=1146029695717560320, journalId=1235980609244409860, articleId=1277255462278005244, orderNo=0, firstName=null, middleName=null, lastName=null, nameCn=null, orcid=null, stid=null, country=null, authorPic=null, dead=0, email=null, emailSecond=null, emailThird=null, correspondingAuthor=0, authorType=1, ext={EN=AuthorExt(id=1277255464773616146, tenantId=1146029695717560320, journalId=1235980609244409860, articleId=1277255462278005244, authorId=1277255464698118670, language=EN, stringName=nanxi XU-QU, firstName=nanxi, middleName=null, lastName=XU-QU, prefix=null, suffix=null, authorComment=null, nameInitials=null, affiliation=null, department=null, xref=^{1, 2}, address=^1.College of Agronomy and Biotechnology, Yunnan Agricultural University, Kunming, Yunnan 650201, China
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徐屈楠茜（2001—），女，硕士研究生，研究方向：甘蔗资源研究与利用。

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徐屈楠茜（2001—），女，硕士研究生，研究方向：甘蔗资源研究与利用。

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