PMID- 27541731 OWN - NLM STAT- MEDLINE DCOM- 20170523 LR - 20181113 IS - 1553-7404 (Electronic) IS - 1553-7390 (Print) IS - 1553-7390 (Linking) VI - 12 IP - 8 DP - 2016 Aug TI - HAPLESS13-Mediated Trafficking of STRUBBELIG Is Critical for Ovule Development in Arabidopsis. PG - e1006269 LID - 10.1371/journal.pgen.1006269 [doi] LID - e1006269 AB - Planar morphogenesis, a distinct feature of multicellular organisms, is crucial for the development of ovule, progenitor of seeds. Both receptor-like kinases (RLKs) such as STRUBBELIG (SUB) and auxin gradient mediated by PIN-FORMED1 (PIN1) play instructive roles in this process. Fine-tuned intercellular communications between different cell layers during ovule development demands dynamic membrane distribution of these cell-surface proteins, presumably through vesicle-mediated sorting. However, the way it's achieved and the trafficking routes involved are obscure. We report that HAPLESS13 (HAP13)-mediated trafficking of SUB is critical for ovule development. HAP13 encodes the mu subunit of adaptor protein 1 (AP1) that mediates protein sorting at the trans-Golgi network/early endosome (TGN/EE). The HAP13 mutant, hap13-1, is defective in outer integument growth, resulting in exposed nucellus accompanied with impaired pollen tube guidance and reception. SUB is mis-targeted in hap13-1. However, unlike that of PIN2, the distribution of PIN1 is independent of HAP13. Genetic interference of exocytic trafficking at the TGN/EE by specifically downregulating HAP13 phenocopied the defects of hap13-1 in SUB targeting and ovule development, supporting a key role of sporophytically expressed SUB in instructing female gametogenesis. FAU - Wang, Jia-Gang AU - Wang JG AD - State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China. FAU - Feng, Chong AU - Feng C AD - State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China. FAU - Liu, Hai-Hong AU - Liu HH AD - State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China. FAU - Ge, Fu-Rong AU - Ge FR AD - State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China. FAU - Li, Sha AU - Li S AD - State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China. FAU - Li, Hong-Ju AU - Li HJ AUID- ORCID: 0000-0003-0064-4626 AD - State Key Laboratory of Molecular Developmental Biology, Institute of Genetics and Developmental Biology, Chinese Academy of Sciences, Beijing, China. FAU - Zhang, Yan AU - Zhang Y AD - State Key Laboratory of Crop Biology, College of Life Sciences, Shandong Agricultural University, Tai'an, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20160819 PL - United States TA - PLoS Genet JT - PLoS genetics JID - 101239074 RN - 0 (AP1 protein, Arabidopsis) RN - 0 (AP1M2 protein, Arabidopsis) RN - 0 (Adaptor Protein Complex 1) RN - 0 (Arabidopsis Proteins) RN - 0 (Indoleacetic Acids) RN - 0 (MADS Domain Proteins) RN - 0 (Membrane Transport Proteins) RN - 0 (PIN1 protein, Arabidopsis) RN - 0 (PIN2 protein, Arabidopsis) RN - EC 2.7.10.1 (Receptor Protein-Tyrosine Kinases) RN - EC 2.7.10.1 (SUB protein, Arabidopsis) SB - IM MH - Adaptor Protein Complex 1/*genetics MH - Arabidopsis/genetics/growth & development MH - Arabidopsis Proteins/biosynthesis/*genetics MH - Endosomes/genetics MH - Gametogenesis, Plant/genetics MH - Gene Expression Regulation, Plant MH - Indoleacetic Acids/metabolism MH - MADS Domain Proteins/biosynthesis/genetics MH - Membrane Transport Proteins/biosynthesis/*genetics MH - Ovule/*genetics/growth & development MH - Plant Development/genetics MH - Protein Transport/genetics MH - Receptor Protein-Tyrosine Kinases/biosynthesis/*genetics MH - Signal Transduction PMC - PMC4991792 COIS- The authors have declared that no competing interests exist. EDAT- 2016/08/20 06:00 MHDA- 2017/05/24 06:00 PMCR- 2016/08/19 CRDT- 2016/08/20 06:00 PHST- 2016/03/25 00:00 [received] PHST- 2016/07/30 00:00 [accepted] PHST- 2016/08/20 06:00 [entrez] PHST- 2016/08/20 06:00 [pubmed] PHST- 2017/05/24 06:00 [medline] PHST- 2016/08/19 00:00 [pmc-release] AID - PGENETICS-D-16-00690 [pii] AID - 10.1371/journal.pgen.1006269 [doi] PST - epublish SO - PLoS Genet. 2016 Aug 19;12(8):e1006269. doi: 10.1371/journal.pgen.1006269. eCollection 2016 Aug.