Characterization of B-BOX gene family and their expression profiles under hormonal, abiotic and metal stresses in Poaceae plants

Abstract

BackgroundB-box (BBX) proteins play important roles in plant growth regulation and development including photomorphogenesis, photoperiodic regulation of flowering, and responses to biotic and abiotic stresses.ResultsIn the present study we retrieved total 131 BBX members from five Poaceae species including 36 from maize, 30 from rice, 24 from sorghum, 22 from stiff brome, and 19 from Millet. All the BBX genes were grouped into five subfamilies on the basis of their phylogenetic relationships and structural features. The expression profiles of 12 OsBBX genes in different tissues were evaluated through qRT-PCR, and we found that most rice BBX members showed high expression level in the heading stage compared to seedling and booting stages. The expression of OsBBX1, OsBBX2, OsBBX8, OsBBX19, and OsBBX24 was strongly induced by abiotic stresses such as drought, cold and salt stresses. Furthermore, the expression of OsBBX2, OsBBX7, OsBBX17, OsBBX19, and OsBBX24 genes was up-regulated under GA, SA and MeJA hormones at different time points. Similarly, the transcripts level of OsBBX1, OsBBX7, OsBBX8, OsBBX17, and OsBBX19 genes were significantly affected by heavy metals such as Fe, Ni, Cr and Cd.ConclusionChange in the expression pattern of BBX members in response to abiotic, hormone and heavy metal stresses signifies their potential roles in plant growth and development and in response to multivariate stresses. The findings suggest that BBX genes could be used as potential genetic markers for the plants, particularly in functional analysis and determining their roles under multivariate stresses.Electronic supplementary materialThe online version of this article (10.1186/s12864-018-5336-z) contains supplementary material, which is available to authorized users.

Genome-wide identification and expression analysis of the B-box transcription factor gene family in grapevine (Vitis vinifera L.)

“…4 ). This result is similar to those from studies of BBX gene family evolution in pear [ 33 ], rice [ 34 ], tomato [ 35 ], maize, sorghum, stiff brome and millet [ 38 ]. Moreover, the segmentally duplicated gene pairs, (e.g., VviBBX21a / VviBBX21b ) comprised the same group and exhibited similar exon-intron structures and motifs (Fig.…”

“…Detailed information about these genes, including gene ID, accession numbers, structural group classification, and physiological and biochemical properties of the encoded protein are given in Table 1 . The number of BBX family genes was the same as found in pear [ 33 ] and was less than in Arabidopsis [ 4 ], rice [ 34 ], tomato [ 35 ], potato [ 36 ], apple [ 37 ] and maize [ 38 ], but higher than eight other plant species [ 38 , 39 ]. We also found that the largest number of BBX members in a plant was 64 from apple, while the least was 19 in millet (Additional file 11 : Fig.…”

Overexpression of AtBBX29 Improves Drought Tolerance by Maintaining Photosynthesis and Enhancing the Antioxidant and Osmolyte Capacity of Sugarcane Plants

“…The function of BBX proteins in abiotic stresses is still poorly understood. To date, in the Poaceae species, the OsBBX1, OsBBX2, OsBBX8, OsBBX19 and OsBB24 genes have been linked to abiotic stress responses, including drought, through changes in their expression profiles, which potentially signify roles in the plants' stress response (Shalmani et al 2019). In addition, a few BBX genes have been functionally annotated with regard to drought stress.…”

B-box Proteins in Arachis duranensis: Genome-Wide Characterization and Expression Profiles Analysis

“…Based on the diversification of their protein sequences and structures, zinc-finger genes are further classified into several distinct subfamilies [3]. A subgroup of zinc-finger proteins containing B-box (BBX) conserved domains, which are thought to be involved in protein-protein interactions, is designated as the BBX family and is highly conserved across all multicellular species [4,[7][8][9].…”