Integrated genetic mapping and transcriptome analysis reveal the BnaA03.IAA7 protein regulates plant architecture and gibberellin signaling in Brassica napus L.

Ping, Xiaoke; Ye, Qianjun; Yan, Mi; Zeng, Jianyan; Yan, Xingying; Li, Haitao; Li, Jiana; Liu, Liezhao

doi:10.1007/s00122-022-04196-8

Cited by 11 publications

(1 citation statement)

References 73 publications

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“…REL encodes a protein with DUF630 and DUF632 domains that give rise to leaf rolling in rice [ 31 ]. The mutation of BnaA03.IAA7 blocked auxin signaling, resulting in crinkle leaves and dwarfing plants [ 32 ]. Our research found that as the candidate gene of leaf wrinkled mutation, BraA07g021970.3C encodes a homolog of TON1, which is relevant to cortical microtubule (CMT) organization.…”

Section: Discussionmentioning

confidence: 99%

BrCWM Mutation Disrupted Leaf Flattening in Chinese Cabbage (Brassica rapa L. ssp. pekinensis)

Yue

Zou

et al. 2023

IJMS

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Leaf flattening plays a vital role in the establishment of plant architecture, which is closely related to plant photosynthesis and, thus, influences the product yield and quality of Chinese cabbage. In this study, we used the doubled haploid line ‘FT’ of Chinese cabbage as the wild type for ethyl methanesulfonate (EMS) mutagenesis and obtained a mutant cwm with stably inherited compact and wrinkled leaves. Genetic analysis revealed that the mutated trait was controlled by a single recessive nuclear gene, Brcwm. Brcwm was preliminarily mapped to chromosome A07 based on bulked segregant RNA sequencing (BSR-seq) and fine-mapped to a 205.66 kb region containing 39 genes between Indel12 and Indel21 using SSR and Indel analysis. According to the whole-genome re-sequencing results, we found that there was only one nonsynonymous single nucleotide polymorphism (SNP) (C to T) within the target interval on exon 4 of BraA07g021970.3C, which resulted in a proline to serine amino acid substitution. The mutated trait co-segregated with the SNP. Quantitative reverse transcriptase polymerase chain reaction (qRT-PCR) revealed that BraA07g021970.3C expression was dramatically higher in ‘FT’ leaves than that in cwm leaves. BraA07g021970.3C is homologous to AT3G55000 encoding a protein related to cortical microtubule organization. A similar phenotype of dwarfism and wrinkled leaves was observed in the recessive homozygous mutant cwm-f1 of AT3G55000, and its T3 transgenic lines were restored to the Arabidopsis wild-type phenotype through ectopic overexpression of BraA07g021970.3C. These results verified that BraA07g021970.3C was the target gene essential for leaf flattening in Chinese cabbage.

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Section: Discussionmentioning

confidence: 99%

BrCWM Mutation Disrupted Leaf Flattening in Chinese Cabbage (Brassica rapa L. ssp. pekinensis)

Yue

Zou

et al. 2023

IJMS

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Auxin regulation on crop: from mechanisms to opportunities in soybean breeding

Chen

2023

Mol Breeding

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Breeding crop varieties with high-yield and ideal plant architecture is a desirable goal of agricultural science. The success of 'Green Revolution' in cereal crops provides opportunities to incorporate phytohormones in crop breeding. Auxin is a critical phytohormone to determinate nearly all the aspects of plant development. Despite the current knowledge regarding auxin biosynthesis, auxin transport and auxin signaling has been well characterized in model Arabidopsis plants, how auxin regulates crop architecture is far from being understood and the introduction of auxin biology in crop breeding stays in the theoretical stage. Here, we give an overview on molecular mechanisms of auxin biology in Arabidopsis, and mainly summarize auxin contributions for crop plant development. Furthermore, we propose potential opportunities to integrate auxin biology in soybean breeding. Full TextTo meet human demand for food, the 'Green Revolution' in agriculture has saved more than a billion people from starvation in 1960s. The 'Green Revolution' refers to the modi cation of cereal crop architecture, like rice and wheat, from tall to short and compact plants which are suitable for high-density planting with high-yielding per acre (

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BnaC03.BIN2 regulates plant height by affecting the main inflorescence length and first effective branch height in Brassica napus L.

Pang,

Yu,

Zhang

et al. 2024

The Crop Journal

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Integrated genetic mapping and transcriptome analysis reveal the BnaA03.IAA7 protein regulates plant architecture and gibberellin signaling in Brassica napus L.

Cited by 11 publications

References 73 publications

BrCWM Mutation Disrupted Leaf Flattening in Chinese Cabbage (Brassica rapa L. ssp. pekinensis)

BrCWM Mutation Disrupted Leaf Flattening in Chinese Cabbage (Brassica rapa L. ssp. pekinensis)

Auxin regulation on crop: from mechanisms to opportunities in soybean breeding

BnaC03.BIN2 regulates plant height by affecting the main inflorescence length and first effective branch height in Brassica napus L.

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