An Empirical Method for Diagnosing Premature Bolting Risk in Spring Cabbage by Estimating the Flower Bud Differentiation Period

Abstract Background The B3 superfamily (B3s) represents a class of large plant-specific transcription factors, which play diverse roles in plant growth and development process including flowering induction. However, identification and functional surveys of B3 superfamily have not been reported in ethylene-induced pineapple flowering (Ananas comosus). Results 57 B3 genes containing B3 domain were identified and phylogenetically classified into five subfamilies. Chromosomal localization analysis revealed that 54 of 57 AcB3s were located on 21 Linkage Groups (LG). Collinearity analysis demonstrated that the segmental duplication was the main event in the evolution of B3 gene superfamily, and most of them were under purifying selection. The analysis of cis-element composition suggested that most of these genes may have function in response to abscisic acid, ethylene, MeJA, light, and abiotic stress. qRT-PCR analysis of 40 AcB3s containing ethylene responsive elements exhibited that the expression levels of 35 genes were up-regulated within 1 d after ethephon treatment and some were highly expressed in flower bud differentiation period in stem apex, such as Aco012003, Aco019552 and Aco014401. Conclusion This study provides a basic information of AcB3s and clues for involvement of some AcB3s in ethylene-induced flowering in pineapple.

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Comparative transcriptome analysis reveals differential gene expression in sterile and fertile rubber tree varieties during flower bud differentiation

Journal of Plant Physiology ◽

10.1016/j.jplph.2021.153506 ◽

2021 ◽

pp. 153506

Author(s):

Fei Li ◽

Ying Wang ◽

Heqiong Gao ◽

Xiaofei Zhang ◽

Nansheng Zhuang

Keyword(s):

Gene Expression ◽

Differential Gene Expression ◽

Transcriptome Analysis ◽

Rubber Tree ◽

Comparative Transcriptome ◽

Flower Bud ◽

Comparative Transcriptome Analysis ◽

Differential Gene ◽

Flower Bud Differentiation

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Comparison of flower bud differentiation in strawberry in different latitudes and altitudes

Acta Horticulturae ◽

10.17660/actahortic.2021.1309.58 ◽

2021 ◽

pp. 403-406

Author(s):

C.F. Zhong ◽

Y. Zhang ◽

Y.S. Qiao ◽

J.C. Song ◽

J. Dong ◽

...

Keyword(s):

Flower Bud ◽

Flower Bud Differentiation

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Studies on the flower bud differentiation and development in some ornamental trees and shrubs. VI

Engei Gakkai zasshi ◽

10.2503/jjshs.26.37 ◽

1957 ◽

Vol 26 (1) ◽

pp. 37-42 ◽

Cited By ~ 1

Author(s):

K. KOSUGI ◽

K. OYOSHI ◽

A. SUMITOMO ◽

M. KANEKO

Keyword(s):

Flower Bud ◽

Flower Bud Differentiation ◽

Ornamental Trees ◽

Trees And Shrubs

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Genome-wide characterization and expression profiling of B3 superfamily during flower induction stage in pineapple (Ananas comosus L.)

10.1101/2020.10.19.345181 ◽

2020 ◽

Author(s):

Cheng Cheng Ruan ◽

Zhe Chen ◽

Fu Chu Hu ◽

Xiang He Wang ◽

Li Jun Guo ◽

...

Keyword(s):

Development Process ◽

Purifying Selection ◽

Ananas Comosus ◽

Flower Bud ◽

Genome Wide ◽

Localization Analysis ◽

Ethephon Treatment ◽

High Level ◽

Differentiation Period ◽

Induction Stage

AbstractThe B3 superfamily is a plant-specific family, which involves in growth and development process. By now, the identification of B3 superfamily in pineapple (Ananas comosus) has not reported. In this study, 57 B3 genes were identified and further phylogenetically classified into five subfamilies, all genes contained B3 domain. Chromosomal localization analysis revealed that 54 of 57 AcB3 genes were located on 21 chromosomes.Collinearity analysis indicated that the segmental duplication was the main event in the evolution of B3 gene superfamily and most of them were under purifying selection. Moreover, there were 7 and 39 pairs of orthologous B3s were identified between pineapple and Arabidopsis or rice, respectively, which indicated the closer genetic relationship between pineapple and rice. Most genes had cis-element of abscisic acid, ethylene, MeJA, light, and abiotic stress. qRT-PCR showed that the expression level of most AcB3 genes were up-regulated within 1 d after ethephon treatment and expressed high level in flower bud differentiation period in stem apex. This study provide a comprehensive understanding of AcB3s and a basis for future molecular studies of ethephon induced pineapple flowering.

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Factors influencing flower bud formation on the pear tree cultivar 'Doyenne du Comice'. I. Shoot growth and flower bud differentiation on trees sprayed with chlormequat and unsprayed ones

Acta Agrobotanica ◽

10.5586/aa.1983.008 ◽

2013 ◽

Vol 36 (1-2) ◽

pp. 83-94 ◽

Cited By ~ 1

Author(s):

Franciszka Jaumień

Keyword(s):

Shoot Growth ◽

Apple Tree ◽

Flower Buds ◽

Flower Bud ◽

Bud Formation ◽

Pear Tree ◽

Factors Influencing ◽

Long Shoots ◽

Flower Bud Differentiation ◽

Flower Bud Formation

The growth of trees sprayed in spring with chlormequat is weaker, and their elongation growth ends 2 - 3 weeks earlier than that of unsprayed trees. Trees with growth inhibited by chlormequat set flower buds on the spurs and in the subapical part of long shoots. The course of flower bud differentiation starts in the second half of July and is similar to that in the apple tree.

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RcAP1, a Homolog of APETALA1, is Associated with Flower Bud Differentiation and Floral Organ Morphogenesis in Rosa chinensis

International Journal of Molecular Sciences ◽

10.3390/ijms20143557 ◽

2019 ◽

Vol 20 (14) ◽

pp. 3557 ◽

Cited By ~ 2

Author(s):

Yu Han ◽

Aoying Tang ◽

Jiayao Yu ◽

Tangren Cheng ◽

Jia Wang ◽

...

Keyword(s):

Floral Organ ◽

Flower Buds ◽

Flower Bud ◽

Floral Organs ◽

Rosa Chinensis ◽

Organ Morphogenesis ◽

Floral Primordia ◽

Flower Bud Differentiation ◽

Delayed Flowering

Rosa chinensis is one of the most popular flower plants worldwide. The recurrent flowering trait greatly enhances the ornamental value of roses, and is the result of the constant formation of new flower buds. Flower bud differentiation has always been a major topic of interest among researchers. The APETALA1 (AP1) MADS-box (Mcm1, Agamous, Deficiens and SRF) transcription factor-encoding gene is important for the formation of the floral meristem and floral organs. However, research on the rose AP1 gene has been limited. Thus, we isolated AP1 from Rosa chinensis ‘Old Blush’. An expression analysis revealed that RcAP1 was not expressed before the floral primordia formation stage in flower buds. The overexpression of RcAP1 in Arabidopsis thaliana resulted in an early-flowering phenotype. Additionally, the virus-induced down-regulation of RcAP1 expression delayed flowering in ‘Old Blush’. Moreover, RcAP1 was specifically expressed in the sepals of floral organs, while its expression was down-regulated in abnormal sepals and leaf-like organs. These observations suggest that RcAP1 may contribute to rose bud differentiation as well as floral organ morphogenesis, especially the sepals. These results may help for further characterization of the regulatory mechanisms of the recurrent flowering trait in rose.

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