PMID- 31721818 OWN - NLM STAT- MEDLINE DCOM- 20200316 LR - 20200316 IS - 1932-6203 (Electronic) IS - 1932-6203 (Linking) VI - 14 IP - 11 DP - 2019 TI - Identifying resurrection genes through the differentially expressed genes between Selaginella tamariscina (Beauv.) spring and Selaginella moellendorffii Hieron under drought stress. PG - e0224765 LID - 10.1371/journal.pone.0224765 [doi] LID - e0224765 AB - Selaginella tamariscina (Beauv.) spring, a primitive vascular resurrection plant, can survive extreme drought and recover when water becomes available. To identify drought-inducible genes and to clarify the molecular mechanism of drought tolerance, a comparative transcriptional pattern analysis was conducted between S. tamariscina and Selaginella moellendorffii Hieron (drought sensitive). 133 drought related genes were identified, including 72 functional genes and 61 regulatory genes. And several drought responsive reactions, such as antioxidant activity, osmotic balance, cuticle defense and signal transduction were highlighted in S. tamariscina under drought. Notably, besides peroxidase, catalase and L-ascorbate oxidase genes, DEGs associated with phenylalanine metabolism and polyamine catabolism could be alternative ways to enhance antioxidant ability in S. tamariscina. DEGs related to soluble carbohydrate metabolism, late embryogenesis abundant protein (LEA) and aquaporin protein (AQP) confirmed that osmotic adjustment could resist drought during desiccation. DEGs involved in xyloglucan metabolic process, pectin metabolic process and cutin biosynthesis may also contribute to drought tolerance of S. tamariscina by cuticle defense. Drought-responsive genes encoding protein kinases, calcium sensors, transcription factors (TFs) and plant hormones also help to drought resistance of S. tamariscina. The preliminary validation experiments were performed and the results were consistent with our hypothetical integrated regulatory network. The results of this study provide candidate resurrection genes and an integrated regulatory network for further studies on the molecular mechanisms of stress tolerance in S. tamariscina. FAU - Gu, Wei AU - Gu W AD - School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China. AD - Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China. FAU - Zhang, Aqin AU - Zhang A AD - School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China. FAU - Sun, Hongmei AU - Sun H AD - School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China. FAU - Gu, Yuchen AU - Gu Y AD - School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China. FAU - Chao, Jianguo AU - Chao J AD - School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China. FAU - Tian, Rong AU - Tian R AD - School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China. FAU - Duan, Jin-Ao AU - Duan JA AUID- ORCID: 0000-0001-7109-7848 AD - School of Pharmacy, Nanjing University of Chinese Medicine, Nanjing, China. AD - Jiangsu Collaborative Innovation Center of Chinese Medicinal Resources Industrialization, Nanjing University of Chinese Medicine, Nanjing, China. LA - eng PT - Journal Article PT - Research Support, Non-U.S. Gov't DEP - 20191113 PL - United States TA - PLoS One JT - PloS one JID - 101285081 SB - IM MH - Desiccation MH - *Droughts MH - Gene Expression Profiling MH - *Gene Expression Regulation, Plant MH - Genes, Plant/*genetics MH - Selaginellaceae/*genetics MH - Stress, Physiological/*genetics PMC - PMC6853609 COIS- The authors have declared that no competing interests exist. EDAT- 2019/11/14 06:00 MHDA- 2020/03/17 06:00 PMCR- 2019/11/13 CRDT- 2019/11/14 06:00 PHST- 2019/06/23 00:00 [received] PHST- 2019/10/21 00:00 [accepted] PHST- 2019/11/14 06:00 [entrez] PHST- 2019/11/14 06:00 [pubmed] PHST- 2020/03/17 06:00 [medline] PHST- 2019/11/13 00:00 [pmc-release] AID - PONE-D-19-17762 [pii] AID - 10.1371/journal.pone.0224765 [doi] PST - epublish SO - PLoS One. 2019 Nov 13;14(11):e0224765. doi: 10.1371/journal.pone.0224765. eCollection 2019.