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Fine mapping of an up-curling leaf locus (BnUC1) in Brassica napus.
BMC Plant Biol 2019; 19(1):324BP

Abstract

BACKGROUND

Leaf shape development research is important because leaf shapes such as moderate curling can help to improve light energy utilization efficiency. Leaf growth and development includes initiation of the leaf primordia and polar differentiation of the proximal-distal, adaxial-abaxial, and centrolateral axes. Changes in leaf adaxial-abaxial polarity formation, auxin synthesis and signaling pathways, and development of sclerenchyma and cuticle can cause abnormal leaf shapes such as up-curling leaf. Although many genes related to leaf shape development have been reported, the detailed mechanism of leaf development is still unclear. Here, we report an up-curling leaf mutant plant from our Brassica napus germplasm. We studied its inheritance, mapped the up-curling leaf locus BnUC1, built near-isogenic lines for the Bnuc1 mutant, and evaluated the effect of the dominant leaf curl locus on leaf photosynthetic efficiency and agronomic traits.

RESULTS

The up-curling trait was controlled by one dominant locus in a progeny population derived from NJAU5734 and Zhongshuang 11 (ZS11). This BnUC1 locus was mapped in an interval of 2732.549 kb on the A05 chromosome of B. napus using Illumina Brassica 60 K Bead Chip Array. To fine map BnUC1, we designed 201 simple sequence repeat (SSR) primers covering the mapping interval. Among them, 16 polymorphic primers that narrowed the mapping interval to 54.8 kb were detected using a BC6F2 family population with 654 individuals. We found six annotated genes in the mapping interval using the B. napus reference genome, including BnaA05g18250D and BnaA05g18290D, which bioinformatics and gene expression analyses predicted may be responsible for leaf up-curling. The up-curling leaf trait had negative effects on the agronomic traits of 30 randomly selected individuals from the BC6F2 population. The near-isogenic line of the up-curling leaf (ZS11-UC1) was constructed to evaluate the effect of BnUC1 on photosynthetic efficiency. The results indicated that the up-curling leaf trait locus was beneficial to improve the photosynthetic efficiency.

CONCLUSIONS

An up-curling leaf mutant Bnuc1 was controlled by one dominant locus BnUC1. This locus had positive effects on photosynthetic efficiency, negative effects on some agronomic traits, and may help to increase planting density in B. napus.

Authors+Show Affiliations

National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China.National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China.National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China.National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China.National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China.National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China.National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China.National Key Laboratory of Crop Genetics and Germplasm Enhancement, Jiangsu Collaborative Innovation Center for Modern Crop Production, Nanjing Agricultural University, Nanjing, 210095, China. guanrzh@njau.edu.cn.

Pub Type(s)

Journal Article

Language

eng

PubMed ID

31324149

Citation

Yang, Mao, et al. "Fine Mapping of an Up-curling Leaf Locus (BnUC1) in Brassica Napus." BMC Plant Biology, vol. 19, no. 1, 2019, p. 324.
Yang M, Huang C, Wang M, et al. Fine mapping of an up-curling leaf locus (BnUC1) in Brassica napus. BMC Plant Biol. 2019;19(1):324.
Yang, M., Huang, C., Wang, M., Fan, H., Wan, S., Wang, Y., ... Guan, R. (2019). Fine mapping of an up-curling leaf locus (BnUC1) in Brassica napus. BMC Plant Biology, 19(1), p. 324. doi:10.1186/s12870-019-1938-0.
Yang M, et al. Fine Mapping of an Up-curling Leaf Locus (BnUC1) in Brassica Napus. BMC Plant Biol. 2019 Jul 19;19(1):324. PubMed PMID: 31324149.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Fine mapping of an up-curling leaf locus (BnUC1) in Brassica napus. AU - Yang,Mao, AU - Huang,Chengwei, AU - Wang,Mingming, AU - Fan,Hao, AU - Wan,Shubei, AU - Wang,Yangming, AU - He,Jianbo, AU - Guan,Rongzhan, Y1 - 2019/07/19/ PY - 2019/05/10/received PY - 2019/07/11/accepted PY - 2019/7/21/entrez PY - 2019/7/22/pubmed PY - 2019/8/27/medline KW - Brassica napus KW - Gene mapping KW - Near-isogenic line KW - Single nucleotide polymorphism KW - Up-curling leaf mutant SP - 324 EP - 324 JF - BMC plant biology JO - BMC Plant Biol. VL - 19 IS - 1 N2 - BACKGROUND: Leaf shape development research is important because leaf shapes such as moderate curling can help to improve light energy utilization efficiency. Leaf growth and development includes initiation of the leaf primordia and polar differentiation of the proximal-distal, adaxial-abaxial, and centrolateral axes. Changes in leaf adaxial-abaxial polarity formation, auxin synthesis and signaling pathways, and development of sclerenchyma and cuticle can cause abnormal leaf shapes such as up-curling leaf. Although many genes related to leaf shape development have been reported, the detailed mechanism of leaf development is still unclear. Here, we report an up-curling leaf mutant plant from our Brassica napus germplasm. We studied its inheritance, mapped the up-curling leaf locus BnUC1, built near-isogenic lines for the Bnuc1 mutant, and evaluated the effect of the dominant leaf curl locus on leaf photosynthetic efficiency and agronomic traits. RESULTS: The up-curling trait was controlled by one dominant locus in a progeny population derived from NJAU5734 and Zhongshuang 11 (ZS11). This BnUC1 locus was mapped in an interval of 2732.549 kb on the A05 chromosome of B. napus using Illumina Brassica 60 K Bead Chip Array. To fine map BnUC1, we designed 201 simple sequence repeat (SSR) primers covering the mapping interval. Among them, 16 polymorphic primers that narrowed the mapping interval to 54.8 kb were detected using a BC6F2 family population with 654 individuals. We found six annotated genes in the mapping interval using the B. napus reference genome, including BnaA05g18250D and BnaA05g18290D, which bioinformatics and gene expression analyses predicted may be responsible for leaf up-curling. The up-curling leaf trait had negative effects on the agronomic traits of 30 randomly selected individuals from the BC6F2 population. The near-isogenic line of the up-curling leaf (ZS11-UC1) was constructed to evaluate the effect of BnUC1 on photosynthetic efficiency. The results indicated that the up-curling leaf trait locus was beneficial to improve the photosynthetic efficiency. CONCLUSIONS: An up-curling leaf mutant Bnuc1 was controlled by one dominant locus BnUC1. This locus had positive effects on photosynthetic efficiency, negative effects on some agronomic traits, and may help to increase planting density in B. napus. SN - 1471-2229 UR - https://www.unboundmedicine.com/medline/citation/31324149/Fine_mapping_of_an_up-curling_leaf_locus_(BnUC1)_in_Brassica_napus L2 - https://bmcplantbiol.biomedcentral.com/articles/10.1186/s12870-019-1938-0 DB - PRIME DP - Unbound Medicine ER -