TY - JOUR
T1 - Identification of ABC transporter G subfamily in white lupin and functional characterization of L.albABGC29 in phosphorus use
AU - Aslam, Mehtab Muhammad
AU - Waseem, Muhammad
AU - Zhang, Qian
AU - Ke, Wang
AU - Zhang, Jianhua
AU - Xu, Weifeng
N1 - Funding Information:
We are grateful for the financial support from the National Key R&D Program of China and the National Natural Science Foundation of China. We are thankful to Professor Feng Yan at the Justus Liebig University, Germany, for providing us with white lupin seeds.
Funding Information:
We are grateful for the financial support from the National Key R&D Program of China and the National Natural Science Foundation of China. We are thankful to Professor Feng Yan at the Justus Liebig University, Germany, for providing us with white lupin seeds.
Funding Information:
This work was supported by the National Key R&D Program of China (2017YFE0118100) and the National Natural Science Foundation of China (31761130073, 31422047, 31872169, 31770123 and 31901428).
Publisher Copyright:
© 2021, The Author(s).
PY - 2021/10/6
Y1 - 2021/10/6
N2 - Background: White lupin (Lupinus albus) is a leguminous crop with elite adaptive ability in phosphorus-deficient soil and used as a model plant for studying phosphorus (P) use. However, the genetic basis of its adaptation to low P (LP) remains unclear. ATPase binding cassette (ABC) transports G subfamily play a crucial role in the transportation of biological molecules across the membrane. To date, identification of this subfamily has been analyzed in some plants, but no systematic analysis of these transporters in phosphorus acquisition is available for white lupin. Results: This study identified 66 ABCG gene family members in the white lupin genome using comprehensive approaches. Phylogenetic analysis of white lupin ABCG transporters revealed six subclades based on their counterparts in Arabidopsis, displaying distinct gene structure and motif distribution in each cluster. Influences of the whole genome duplication on the evolution of L.albABCGs were investigated in detail. Segmental duplications appear to be the major driving force for the expansion of ABCGs in white lupin. Analysis of the Ka/Ks ratios indicated that the paralogs of the L.albABCG subfamily members principally underwent purifying selection. However, it was found that L.albABCG29 was a result of both tandem and segmental duplications. Overexpression of L.albABCG29 in white lupin hairy root enhanced P accumulation in cluster root under LP and improved plant growth. Histochemical GUS staining indicated that L.albABCG29 expression increased under LP in white lupin roots. Further, overexpression of L.albABCG29 in rice significantly improved P use under combined soil drying and LP by improving root growth associated with increased rhizosheath formation. Conclusion: Through systematic and comprehensive genome-wide bioinformatics analysis, including conserved domain, gene structures, chromosomal distribution, phylogenetic relationships, and gene duplication analysis, the L.albABCG subfamily was identified in white lupin, and L.albABCG29 characterized in detail. In summary, our results provide deep insight into the characterization of the L.albABCG subfamily and the role of L.albABCG29 in improving P use.
AB - Background: White lupin (Lupinus albus) is a leguminous crop with elite adaptive ability in phosphorus-deficient soil and used as a model plant for studying phosphorus (P) use. However, the genetic basis of its adaptation to low P (LP) remains unclear. ATPase binding cassette (ABC) transports G subfamily play a crucial role in the transportation of biological molecules across the membrane. To date, identification of this subfamily has been analyzed in some plants, but no systematic analysis of these transporters in phosphorus acquisition is available for white lupin. Results: This study identified 66 ABCG gene family members in the white lupin genome using comprehensive approaches. Phylogenetic analysis of white lupin ABCG transporters revealed six subclades based on their counterparts in Arabidopsis, displaying distinct gene structure and motif distribution in each cluster. Influences of the whole genome duplication on the evolution of L.albABCGs were investigated in detail. Segmental duplications appear to be the major driving force for the expansion of ABCGs in white lupin. Analysis of the Ka/Ks ratios indicated that the paralogs of the L.albABCG subfamily members principally underwent purifying selection. However, it was found that L.albABCG29 was a result of both tandem and segmental duplications. Overexpression of L.albABCG29 in white lupin hairy root enhanced P accumulation in cluster root under LP and improved plant growth. Histochemical GUS staining indicated that L.albABCG29 expression increased under LP in white lupin roots. Further, overexpression of L.albABCG29 in rice significantly improved P use under combined soil drying and LP by improving root growth associated with increased rhizosheath formation. Conclusion: Through systematic and comprehensive genome-wide bioinformatics analysis, including conserved domain, gene structures, chromosomal distribution, phylogenetic relationships, and gene duplication analysis, the L.albABCG subfamily was identified in white lupin, and L.albABCG29 characterized in detail. In summary, our results provide deep insight into the characterization of the L.albABCG subfamily and the role of L.albABCG29 in improving P use.
KW - ABCG subfamily
KW - Duplication
KW - Phosphorus
KW - Rice
KW - White lupin
UR - http://www.scopus.com/inward/record.url?scp=85116413890&partnerID=8YFLogxK
U2 - 10.1186/s12864-021-08015-0
DO - 10.1186/s12864-021-08015-0
M3 - Journal article
C2 - 34615466
AN - SCOPUS:85116413890
SN - 1471-2164
VL - 22
JO - BMC Genomics
JF - BMC Genomics
IS - 1
M1 - 723
ER -