{"status":"ok","message-type":"work","message-version":"1.0.0","message":{"indexed":{"date-parts":[[2026,6,15]],"date-time":"2026-06-15T00:10:24Z","timestamp":1781482224560,"version":"3.54.1"},"reference-count":67,"publisher":"MDPI AG","issue":"24","license":[{"start":{"date-parts":[[2019,12,16]],"date-time":"2019-12-16T00:00:00Z","timestamp":1576454400000},"content-version":"vor","delay-in-days":0,"URL":"https:\/\/creativecommons.org\/licenses\/by\/4.0\/"}],"funder":[{"DOI":"10.13039\/501100010038","name":"Earmarked Fund for China Agriculture Research System","doi-asserted-by":"publisher","award":["CARS-28"],"award-info":[{"award-number":["CARS-28"]}],"id":[{"id":"10.13039\/501100010038","id-type":"DOI","asserted-by":"publisher"}]}],"content-domain":{"domain":[],"crossmark-restriction":false},"short-container-title":["IJMS"],"abstract":"<jats:p>The development of dwarf fruit trees with smaller and compact characteristics leads to significantly increased fruit production, which is a major objective of pear (Pyrus bretschneideri) breeding. We identified the S-acylation activity of PbPAT14, an S-acyltransferase gene related to plant development, using a yeast (Saccharomyces cerevisiae) complementation assay, and also PbPAT14 could rescue the growth defect of the Arabidopsis mutant atpat14. We further studied the function of PbPAT14 by designing three guide RNAs for PbPAT14 to use in the CRISPR\/Cas9 system. We obtained 22 positive transgenic pear lines via Agrobacterium-mediated transformation using cotyledons from seeds of Pyrus betulifolia (\u2018Duli\u2019). Six of these lines exhibited the dwarf yellowing phenotype and were homozygous mutations according to sequencing analysis. Ultrastructure analysis suggested that this dwarfism was manifested by shorter, thinner stems due to a reduction in cell number. A higher level of endogenous abscisic acid (ABA) and a higher transcript level of the ABA pathway genes in the mutant lines revealed that the PbPAT14 function was related to the ABA pathway. Overall, our experimental results increase the understanding of how PATs function in plants and help elucidate the mechanism of plant dwarfism.<\/jats:p>","DOI":"10.3390\/ijms20246347","type":"journal-article","created":{"date-parts":[[2019,12,17]],"date-time":"2019-12-17T02:59:01Z","timestamp":1576551541000},"page":"6347","update-policy":"https:\/\/doi.org\/10.3390\/mdpi_crossmark_policy","source":"Crossref","is-referenced-by-count":25,"title":["Knockout of the S-acyltransferase Gene, PbPAT14, Confers the Dwarf Yellowing Phenotype in First Generation Pear by ABA Accumulation"],"prefix":"10.3390","volume":"20","author":[{"given":"Hongguang","family":"Pang","sequence":"first","affiliation":[{"name":"Pear Engineering and Technology Research Center of Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Qi","family":"Yan","sequence":"additional","affiliation":[{"name":"Pear Engineering and Technology Research Center of Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Shuliang","family":"Zhao","sequence":"additional","affiliation":[{"name":"Pear Engineering and Technology Research Center of Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Fang","family":"He","sequence":"additional","affiliation":[{"name":"College of Biological Sciences and Technology, Beijing Forestry University, Beijing 100083, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Jianfeng","family":"Xu","sequence":"additional","affiliation":[{"name":"Pear Engineering and Technology Research Center of Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Baoxiu","family":"Qi","sequence":"additional","affiliation":[{"name":"Pear Engineering and Technology Research Center of Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]},{"given":"Yuxing","family":"Zhang","sequence":"additional","affiliation":[{"name":"Pear Engineering and Technology Research Center of Hebei, College of Horticulture, Hebei Agricultural University, Baoding 071001, China"}],"role":[{"vocabulary":"crossref","role":"author"}]}],"member":"1968","published-online":{"date-parts":[[2019,12,16]]},"reference":[{"key":"ref_1","doi-asserted-by":"crossref","first-page":"499","DOI":"10.17660\/ActaHortic.2003.622.55","article-title":"Breeding and selection of apple and pear rootstocks. 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