ACTA AGRICULTURAE BOREALI-SINICA ›› 2020, Vol. 35 ›› Issue (1): 29-35. doi: 10.7668/hbnxb.20190587

Special Issue: Cotton Biotechnology Hot Article

• Crop Genetics·Germplasm Resources·Biotechnology • Previous Articles     Next Articles

Cloning and Expression Analysis of a Cotton Pigment Gland Formation Related Gene GhNAC201

ZHANG Xi1, QIAN Yuyuan1, LIU Yi1, WANG Guang1, SONG Shijia2, LI Xiaofei3, MI Huanfang4, CUI Shufang1, LI Junlan1   

  1. 1. Institute of Cotton, Hebei Academy of Agriculture and Forestry Sciences, Key Laboratory of Biology and Genetic Improvement of Cotton in Huanghuaihai Semiarid Area, Ministry of Agriculture, National Cotton Improvement Center Hebei Branch, Shijiazhuang 050051, China;
    2. Hebei Academy of Agriculture and Forestry Sciences, Shijiazhuang 050051, China;
    3. Hebei University of Engineering, Handan 056038, China;
    4. Handan Academy of Agricultural Sciences, Handan 056001, China
  • Received:2019-09-15 Published:2020-02-28

Abstract: To investigate the function of GhNAC201 in cotton pigment gland development,RT-PCR was performed to isolate the coding sequence(CDS)of GhNAC201 from glanded cotton Zhongmiansuo 12. Gene expressions of glanded and glandless cotton at different developmental stages,in different tissues and under various hormones treatment were analyzed by qRT-PCR. CDS of GhNAC201 was 948 bp in length and encoded 315 aa,with a theoretical pI 5.97. 27.94% alpha helix,5.40% beta turn,18.10% extended strand and 48.57% random coil were predicted in protein secondary structure. 3D structure of GhNAC201 had been modelled by rice stress-responsive NAC1 with model dimensions of X:55.229 Å,Y:36.150 Å,Z:46.112 Å. GhNAC201 contained a NAM domain at 30-163 aa,and 5 threonine,6 serine and 4 tyrosine phosphorylation sites were predicted within the NAM domain. Subcellular localization prediction showed that GhNAC201 had a certain probability to locate in secretory pathway or other subcellular structures other than mitochondrion and chloroplast. The homology of GhNAC201 homologous proteins in different species was relatively high,and 5 motifs were highly conserved.The motif pattern of GhNAC201 was consistent with its homologous proteins in Gossypium arboretum and G. raimondii. Expression levels of GhNAC201 in the glanded cotton Zhongmiansuo 12 were extremely significantly higher than those in dominant and recessive glandless cotton and could be extremely significantly up-regulated by ABA,BR,GA and MeJA. The spatial-temporal expression pattern of GhNAC201 in Zhongmiansuo 12 tended to be consistent with the spatial-temporal distribution of gland density. In conclusion, GhNAC201 was closely related to the development of pigment glands in cotton,and might regulate gland development or gossypol metabolism through ABA,BR,GA and JA pathways.

Key words: Cotton, NAC transcriptional factor, GhNAC201, Sequence analysis, Expression analysis

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Cite this article

ZHANG Xi, QIAN Yuyuan, LIU Yi, WANG Guang, SONG Shijia, LI Xiaofei, MI Huanfang, CUI Shufang, LI Junlan. Cloning and Expression Analysis of a Cotton Pigment Gland Formation Related Gene GhNAC201[J]. ACTA AGRICULTURAE BOREALI-SINICA, 2020, 35(1): 29-35. doi: 10.7668/hbnxb.20190587.

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