In:
PLOS ONE, Public Library of Science (PLoS), Vol. 18, No. 5 ( 2023-5-10), p. e0285494-
Abstract:
MicroRNAs (miRNAs) widely participate in plant growth and development. The miR396 family, one of the most conserved miRNA families, remains poorly understood in sorghum. To reveal the evolution and expression pattern of Sbi-miR396 gene family in sorghum, bioinformatics analysis and target gene prediction were performed on the sequences of the Sbi-miR396 gene family members. The results showed that five Sbi-miR396 members, located on chromosomes 4, 6, and 10, were identified at the whole-genome level. The secondary structure analysis showed that the precursor sequences of all five Sbi-miR396 potentially form a stable secondary stem–loop structure, and the mature miRNA sequences were generated on the 5′ arm of the precursors. Sequence analysis identified the mature sequences of the five sbi-miR396 genes were high identity, with differences only at the 1st, 9th and 21st bases at the 5’ end. Phylogenetic analysis revealed that Sbi-miR396a , Sbi-miR396b , and Sbi-miR396c were clustered into Group I, and Sbi-miR396d and Sbi-miR396e were clustered into Group II, and all five sbi-miR396 genes were closely related to those of maize and foxtail millet. Expression analysis of different tissue found that Sbi-miR396d / e and Sbi-miR396a / b / c were preferentially and barely expressed, respectively, in leaves, flowers, and panicles. Target gene prediction indicates that the growth-regulating factor family members ( SbiGRF1 / 2 / 3 / 4 / 5 / 6 / 7 / 8 / 10 ) were target genes of Sbi-miR396d / e . Thus, Sbi-miR396d / e may affect the growth and development of sorghum by targeting SbiGRF s. In addition, expression analysis of different tissues and developmental stages found that all Sbi-miR396 target genes, SbiGRF s, were barely expressed in leaves, root and shoot, but were predominantly expressed in inflorescence and seed development stage, especially SbiGRF1 / 5 / 8 . Therefore, inhibition the expression of sbi-miR396d /e may increase the expression of SbiGRF1 / 5 / 8 , thereby affecting floral organ and seed development in sorghum. These findings provide the basis for studying the expression of the Sbi-mir396 family members and the function of their target genes.
Type of Medium:
Online Resource
ISSN:
1932-6203
DOI:
10.1371/journal.pone.0285494
DOI:
10.1371/journal.pone.0285494.g001
DOI:
10.1371/journal.pone.0285494.g002
DOI:
10.1371/journal.pone.0285494.g003
DOI:
10.1371/journal.pone.0285494.g004
DOI:
10.1371/journal.pone.0285494.g005
DOI:
10.1371/journal.pone.0285494.g006
DOI:
10.1371/journal.pone.0285494.g007
DOI:
10.1371/journal.pone.0285494.g008
DOI:
10.1371/journal.pone.0285494.g009
DOI:
10.1371/journal.pone.0285494.g010
DOI:
10.1371/journal.pone.0285494.t001
DOI:
10.1371/journal.pone.0285494.t002
DOI:
10.1371/journal.pone.0285494.s001
DOI:
10.1371/journal.pone.0285494.s002
DOI:
10.1371/journal.pone.0285494.s003
DOI:
10.1371/journal.pone.0285494.s004
DOI:
10.1371/journal.pone.0285494.r001
DOI:
10.1371/journal.pone.0285494.r002
DOI:
10.1371/journal.pone.0285494.r003
DOI:
10.1371/journal.pone.0285494.r004
DOI:
10.1371/journal.pone.0285494.r005
DOI:
10.1371/journal.pone.0285494.r006
Language:
English
Publisher:
Public Library of Science (PLoS)
Publication Date:
2023
detail.hit.zdb_id:
2267670-3
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