Moving on up – controlling internode growth

McKim, Sarah M.

doi:10.1111/nph.16439

Cited by 24 publications

(25 citation statements)

References 62 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…In Arabidopsis flowering, the length and activity of its rib meristems were augmented, which enabled lengthening of the internodes forming underneath and between the floral buds [ 47 ]. Plants must coordinate rib cell renewal with daughter cell proliferation/differentiation and inflorescence development, so that the flowers emerge at the optimal time, height, and developmental stage [ 48 ]. GA can promote rib meristem-driven secondary axial elongation by hastening cell division and cell elongation processes [ 49 ].…”

Section: Discussionmentioning

confidence: 99%

Exogenous GA3 promotes flowering in Paphiopedilum callosum (Orchidaceae) through bolting and lateral flower development regulation

Yin

Guo

et al. 2022

Horticulture Research

View full text Add to dashboard Cite

Paphiopedilum orchids have a high ornamental value, whose flower abundance and timing are both key horticultural traits regulated by phytohormones. All one-flowered Paphiopedilum have additional lateral buds in the apical bract that fail to develop. In this study, an exogenous GA3 application promoted flowering of Pycnogonum callosum by inducing its early bolting instead of the floral transition of dominant flowers. Applying GA3 effectively promoted lateral flower differentiation, resulting in a two-flowered inflorescence. GA-promoted of lateral flower formation involved GA interacting with indole-3-acetic acid (IAA) and cytokinins (CTKs), given the decreased CTK content and down-regulated expression of CTK synthesis genes, the increased IAA content and down-regulated expression of IAA degradation, and the up-regulated expression of transport genes. Further, GA acted via PcDELLA, PcTCP15, and PcXTH9 expressed in stage 5 to promote bolting, and via expression of PcAP3, PcPI, and PcSEP to promote flowering. This study provides insight into mechanisms regulating flower development of P. callosum.

show abstract

Section: Discussionmentioning

confidence: 99%

Exogenous GA3 promotes flowering in Paphiopedilum callosum (Orchidaceae) through bolting and lateral flower development regulation

Yin

Guo

et al. 2022

Horticulture Research

View full text Add to dashboard Cite

show abstract

“…Gibberellic acid (GA) is known to regulate internode length [65] and growth regulator treatments have been effective in shortening the internode length. However, dwarfing rootstocks do not reduce internode length, but rather reduce the number of nodes by shortening the growing period.…”

Section: Applementioning

confidence: 99%

Axillary Bud Fate Shapes Plant Architecture in Horticultural Crops

Andrés¹,

Koskela²

2022

Horticulturae

View full text Add to dashboard Cite

Above-ground plant architecture is dictated to a large extent by the fates and growth rates of aerial plant meristems. Shoot apical meristem gives rise to the fundamental plant form by generating new leaves. However, the fates of axillary meristems located in leaf axils have a great influence on plant architecture and affect the harvest index, yield potential and cultural practices. Improving plant architecture by breeding facilitates denser plantations, better resource use efficiency and even mechanical harvesting. Knowledge of the genetic mechanisms regulating plant architecture is needed for precision breeding, especially for determining feasible breeding targets. Fortunately, research in many crop species has demonstrated that a relatively small number of genes has a large effect on axillary meristem fates. In this review, we select a number of important horticultural and agricultural plant species as examples of how changes in plant architecture affect the cultivation practices of the species. We focus specifically on the determination of the axillary meristem fate and review how plant architecture may change even drastically because of altered axillary meristem fate. We also explain what is known about the genetic and environmental control of plant architecture in these species, and how further changes in plant architectural traits could benefit the horticultural sector.

show abstract

“…(1) the rib meristems (van der Serrano-Mislata & Sablowski, 2018;McKim, 2020); (2) the development of phytomers (Fig. 1d; McSteen & Leyser, 2005;Vos et al, 2010);…”

Section: Introductionmentioning

confidence: 99%

“…Altogether, SAM research has involved a tight coupling of modelling, imaging and focused experiments in a remarkable exercise of multiscale systems biology and biophysics. Similar methods are now starting to be applied to the rib zone just below the SAM (Serrano‐Mislata & Sablowski, 2018; McKim, 2020; Fig. 1c) where homeobox genes drive the segmentation into phytomers (Fig.…”

Section: Introductionmentioning

confidence: 99%

“…However, post‐SAM morphogenesis is a very large subject. Recent reviews are available describing the processes at the level of: (1) the rib meristems (van der Schoot et al ., 2014; Serrano‐Mislata & Sablowski, 2018; McKim, 2020); (2) the development of phytomers (Fig. 1d; McSteen & Leyser, 2005; Vos et al ., 2010); (3) the control over the branching pattern (Barbier et al ., 2019); (4) the cambium (the meristem responsible for the secondary diameter growth and wood production in dicots; Fig.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

The shaping of plant axes and crowns through tropisms and elasticity: an example of morphogenetic plasticity beyond the shoot apical meristem

et al. 2022

View full text Add to dashboard Cite

Summary Shoot morphogenetic plasticity is crucial to the adaptation of plants to their fluctuating environments. Major insights into shoot morphogenesis have been compiled studying meristems, especially the shoot apical meristem (SAM), through a methodological effort in multiscale systems biology and biophysics. However, morphogenesis at the SAM is robust to environmental changes. Plasticity emerges later on during post‐SAM development. The purpose of this review is to show that multiscale systems biology and biophysics is insightful for the shaping of the whole plant as well. More specifically, we review the shaping of axes and crowns through tropisms and elasticity, combining the recent advances in morphogenetic control using physical cues and by genes. We focus mostly on land angiosperms, but with growth habits ranging from small herbs to big trees. We show that generic (universal) morphogenetic processes have been identified, revealing feedforward and feedback effects of global shape on the local morphogenetic process. In parallel, major advances have been made in the analysis of the major genes involved in shaping axes and crowns, revealing conserved genic networks among angiosperms. Then, we show that these two approaches are now starting to converge, revealing exciting perspectives.

show abstract

Moving on up – controlling internode growth

Cited by 24 publications

References 62 publications

Exogenous GA3 promotes flowering in Paphiopedilum callosum (Orchidaceae) through bolting and lateral flower development regulation

Exogenous GA3 promotes flowering in Paphiopedilum callosum (Orchidaceae) through bolting and lateral flower development regulation

Axillary Bud Fate Shapes Plant Architecture in Horticultural Crops

The shaping of plant axes and crowns through tropisms and elasticity: an example of morphogenetic plasticity beyond the shoot apical meristem

Contact Info

Product

Resources

About