PMID- 22558105 OWN - NLM STAT- MEDLINE DCOM- 20120910 LR - 20240315 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 7 IP - 4 DP - 2012 TI - Ss-Sl2, a novel cell wall protein with PAN modules, is essential for sclerotial development and cellular integrity of Sclerotinia sclerotiorum. PG - e34962 LID - 10.1371/journal.pone.0034962 [doi] LID - e34962 AB - The sclerotium is an important dormant body for many plant fungal pathogens. Here, we reported that a protein, named Ss-Sl2, is involved in sclerotial development of Sclerotinia sclerotiorum. Ss-Sl2 does not show significant homology with any protein of known function. Ss-Sl2 contains two putative PAN modules which were found in other proteins with diverse adhesion functions. Ss-Sl2 is a secreted protein, during the initial stage of sclerotial development, copious amounts of Ss-Sl2 are secreted and accumulated on the cell walls. The ability to maintain the cellular integrity of RNAi-mediated Ss-Sl2 silenced strains was reduced, but the hyphal growth and virulence of Ss-Sl2 silenced strains were not significantly different from the wild strain. Ss-Sl2 silenced strains could form interwoven hyphal masses at the initial stage of sclerotial development, but the interwoven hyphae could not consolidate and melanize. Hyphae in these interwoven bodies were thin-walled, and arranged loosely. Co-immunoprecipitation and yeast two-hybrid experiments showed that glyceraldehyde-3-phosphate dehydrogenase (GAPDH), Woronin body major protein (Hex1) and elongation factor 1-alpha interact with Ss-Sl2. GAPDH-knockdown strains showed a similar phenotype in sclerotial development as Ss-Sl2 silenced strains. Hex1-knockdown strains showed similar impairment in maintenance of hyphal integrity as Ss-Sl2 silenced strains. The results suggested that Ss-Sl2 functions in both sclerotial development and cellular integrity of S. sclerotiorum. FAU - Yu, Yang AU - Yu Y AD - State Key Laboratory of Agricultural Microbiology, Huazhong Agricultural University, Wuhan, Hubei Province, People's Republic of China. FAU - Jiang, Daohong AU - Jiang D FAU - Xie, Jiatao AU - Xie J FAU - Cheng, Jiasen AU - Cheng J FAU - Li, Guoqing AU - Li G FAU - Yi, Xianhong AU - Yi X FAU - Fu, Yanping AU - Fu Y LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20120425 PL - United States TA - PLoS One JT - PloS one JID - 101285081 RN - 0 (Fungal Proteins) RN - 0 (Melanins) RN - 0 (Peptide Elongation Factor 1) RN - 79956-01-7 (Polyketide Synthases) RN - EC 1.2.1.- (Glyceraldehyde-3-Phosphate Dehydrogenases) SB - IM MH - Ascomycota/*cytology/growth & development/pathogenicity MH - Base Sequence MH - Cell Wall/*chemistry MH - Chromatography, Liquid MH - Fungal Proteins/*genetics MH - Glyceraldehyde-3-Phosphate Dehydrogenases/metabolism MH - Hyphae/*metabolism MH - Immunoprecipitation MH - Melanins/biosynthesis MH - Molecular Sequence Data MH - Mycelium/growth & development/*ultrastructure MH - Peptide Elongation Factor 1/metabolism MH - Polyketide Synthases/genetics MH - RNA Interference MH - Real-Time Polymerase Chain Reaction MH - Reverse Transcriptase Polymerase Chain Reaction MH - Sequence Alignment MH - Sequence Analysis, DNA MH - Tandem Mass Spectrometry MH - Two-Hybrid System Techniques MH - Virulence PMC - PMC3338822 COIS- Competing Interests: The authors have declared that no competing interests exist. EDAT- 2012/05/05 06:00 MHDA- 2012/09/11 06:00 PMCR- 2012/04/25 CRDT- 2012/05/05 06:00 PHST- 2011/11/24 00:00 [received] PHST- 2012/03/08 00:00 [accepted] PHST- 2012/05/05 06:00 [entrez] PHST- 2012/05/05 06:00 [pubmed] PHST- 2012/09/11 06:00 [medline] PHST- 2012/04/25 00:00 [pmc-release] AID - PONE-D-11-24640 [pii] AID - 10.1371/journal.pone.0034962 [doi] PST - ppublish SO - PLoS One. 2012;7(4):e34962. doi: 10.1371/journal.pone.0034962. Epub 2012 Apr 25.