Acta Physiologiae Plantarum

, 40:176 | Cite as

Genome-wide identification, systematic analysis and characterization of SRO family genes in maize (Zea mays L.)

  • Huanhuan Jiang
  • Yao Xiao
  • Suwen ZhuEmail author
Original Article


SIMILAR TO RCD ONE (SRO) is a small plant-specific gene family, which play essential roles in plant growth and development as well as in abiotic stresses. However, the function of SROs in maize is still unknown. In our study, six putative SRO genes were isolated from the maize genome. A systematic analysis was performed to characterize the ZmSRO gene family. The ZmSRO gene family was divided into two groups according to the motif and intron/exon analysis. Phylogenetic analysis of them with other plants showed that the clades of SROs along with the divergence of monocot and dicot and ZmSROs were more closely with OsSROs. Many abiotic stress response and hormone-induced cis-regulatory elements were identified from the promoter region of ZmSROs. Furthermore, RNA-seq analysis indicated that SRO genes were widely expressed in different tissues and development stages in maize, and the expression divergence was also obviously observed. Analyses of expression in response to PEG6000 and NaCl treatment, in addition to exogenous application of ABA and GA hormones showed that the majority of the members display stress-induced expression patterns. Taken together, our results provide valuable reference for further functional analysis of the SRO gene family in maize, especially in abiotic stress responses.


Systematic analysis Maize SRO Abiotic stress 



This study was financially supported by the National Science Foundation of China (Project nos. 31470465; 31770476).

Compliance with ethical standards

Conflict of interest

All authors declared that they had no conflict of interest.

Supplementary material

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Supplementary material 1 (DOC 30 KB)
11738_2018_2738_MOESM2_ESM.xls (30 kb)
Supplementary material 2 (XLS 29 KB)
11738_2018_2738_MOESM3_ESM.xls (276 kb)
Supplementary material 3 (XLS 276 KB)


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Copyright information

© Franciszek Górski Institute of Plant Physiology, Polish Academy of Sciences, Kraków 2018

Authors and Affiliations

  1. 1.Key Laboratory of Crop Biology of Anhui ProvinceAnhui Agricultural UniversityHefeiChina

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