Phenotypic characterization of the CRISPA (ARP gene) mutant of pea (Pisum sativum; Fabaceae): A reevaluation

DeMason, Darleen A.; Chetty, Venkateswari J.

doi:10.3732/ajb.1300415

Cited by 6 publications

(4 citation statements)

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“…In palms, differential growth at the margins forms plications, in which margins are folded into an accordion‐like structure (Fig. c) (Dengler et al ., ). KNOX expression is found in some palm plications, suggesting a blastozone fractionation‐like mechanism (Jouannic et al ., ).…”

Section: Leaf Architecturementioning

confidence: 97%

“…Collectively, PHAN and its homologs from Arabidopsis, ASYMMETRIC LEAVES1 (AS1), and maize, ROUGH SHEATH2 (RS2), are referred to as ARP genes (Timmermans et al, 1999;Tsiantis et al, 1999;Byrne et al, 2000;Ori et al, 2000). Intriguingly, whereas ARP genes in maize, Arabidopsis and pea function in KNOX repression (Waites et al, 1998;Timmermans et al, 1999;Tsiantis et al, 1999;Lodha et al, 2013;DeMason & Chetty, 2014), tomato PHAN and KNOX genes are co-expressed in the same cells (Koltai & Bird, 2000;Kim et al, 2003;DeMason & Chetty, 2014). Unlike the radialized, abaxial phenotypes observed in phan mutants, maize rs2 mutants in the leaf exhibit narrow, halfleaf phenotypes with proximal-distal defects wherein ectopic sheath and ligule identity is expressed in the distal lamina (Schneeberger et al, 1998).…”

Section: Flat Laminar Growth: Patterning and Coordination Of Adaximentioning

confidence: 99%

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On the mechanisms of development in monocot and eudicot leaves

et al. 2018

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Contents Summary I. Introduction II. Leaf zones in monocot and eudicot leaves III. Monocot and eudicot leaf initiation: differences in degree and timing, but not kind IV. Reticulate and parallel venation: extending the model? V. Flat laminar growth: patterning and coordination of adaxial-abaxial and mediolateral axes VI. Stipules and ligules: ontogeny of primordial elaborations VII. Leaf architecture VIII. Stomatal development: shared and diverged mechanisms for making epidermal pores IX. Conclusion Acknowledgements References SUMMARY: Comparisons of concepts in monocot and eudicot leaf development are presented, with attention to the morphologies and mechanisms separating these angiosperm lineages. Monocot and eudicot leaves are distinguished by the differential elaborations of upper and lower leaf zones, the formation of sheathing/nonsheathing leaf bases and vasculature patterning. We propose that monocot and eudicot leaves undergo expansion of mediolateral domains at different times in ontogeny, directly impacting features such as venation and leaf bases. Furthermore, lineage-specific mechanisms in compound leaf development are discussed. Although models for the homologies of enigmatic tissues, such as ligules and stipules, are proposed, tests of these hypotheses are rare. Likewise, comparisons of stomatal development are limited to Arabidopsis and a few grasses. Future studies may investigate correlations in the ontogenies of parallel venation and linear stomatal files in monocots, and the reticulate patterning of veins and dispersed stoma in eudicots. Although many fundamental mechanisms of leaf development are shared in eudicots and monocots, variations in the timing, degree and duration of these ontogenetic events may contribute to key differences in morphology. We anticipate that the incorporation of an ever-expanding number of sequenced genomes will enrich our understanding of the developmental mechanisms generating eudicot and monocot leaves.

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Section: Leaf Architecturementioning

confidence: 97%

Section: Flat Laminar Growth: Patterning and Coordination Of Adaximentioning

confidence: 99%

On the mechanisms of development in monocot and eudicot leaves

et al. 2018

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“…In C. hirsuta , mutation of the AS1 homolog results in an altered pattern of KNOXI expression, leading to the formation of a higher than normal leaflet number (Rast‐Somssich et al, 2015). The pea ( Pisum sativum) crispa mutant (affecting the PHAN protein) develops stipules on its petiole‐rachis axis, a site also associated with ectopic KNOXI expression (Tattersall et al, 2005; DeMason and Chetty, 2014). The down‐regulation of the tomato homolog of PHAN results in a switch from pinnate into palmate compound leaves, and is accompanied by a reduced leaflet number (Kim et al, 2003b; Zoulias et al, 2012).…”

Section: The Development Of the Compound Leafmentioning

confidence: 99%

From genes to networks: The genetic control of leaf development

Wang

Kong

Zhou

2021

JIPB

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Substantial diversity exists for both the size and shape of the leaf, the main photosynthetic organ of flowering plants. The two major forms of leaf are simple leaves, in which the leaf blade is undivided, and compound leaves, which comprise several leaflets. Leaves form at the shoot apical meristem from a group of undifferentiated cells, which first establish polarity, then grow and differentiate. Each of these processes is controlled by a combination of transcriptional regulators, microRNAs and phytohormones. The present review documents recent advances in our understanding of how these various factors modulate the development of both simple leaves (focusing mainly on the model plant Arabidopsis thaliana) and compound leaves (focusing mainly on the model legume species Medicago truncatula).

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“…CRISPA is the ortholog of PHAN in peas, the cri-1 (CRISPA) mutant exhibits ectopic stipules, narrow leaflets, and shortened petioles with excessive adaxial expansion (Tattersall et al, 2005). CRI suppresses KNOX1 and UNI to maintain the normal development and expansion of leaves in peas (DeMason and Chetty, 2014). GOBLET (GOB) belongs to the CUP-SHAPED COTYLEDONS (CUC) subfamily, which can affect compound leaf patterning largely by its expression position, time, and level (Blein et al, 2008;Berger et al, 2009;Ben-Gera and Ori, 2012).…”

Section: The Regulation Mechanism Of Leaf Complexity In Vegetable Cropsmentioning

confidence: 99%

Understanding the molecular mechanism of leaf morphogenesis in vegetable crops conduces to breeding process

Hao

Cao²,

Wang³

et al. 2022

Front. Plant Sci.

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Leaf morphology can affect the development and yield of plants by regulating plant architecture and photosynthesis. Several factors can determine the final leaf morphology, including the leaf complexity, size, shape, and margin type, which suggests that leaf morphogenesis is a complex regulation network. The formation of diverse leaf morphology is precisely controlled by gene regulation on translation and transcription levels. To further reveal this, more and more genome data has been published for different kinds of vegetable crops and advanced genotyping approaches have also been applied to identify the causal genes for the target traits. Therefore, the studies on the molecular regulation of leaf morphogenesis in vegetable crops have also been largely improved. This review will summarize the progress on identified genes or regulatory mechanisms of leaf morphogenesis and development in vegetable crops. These identified markers can be applied for further molecular-assisted selection (MAS) in vegetable crops. Overall, the review will contribute to understanding the leaf morphology of different crops from the perspective of molecular regulation and shortening the breeding cycle for vegetable crops.

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Phenotypic characterization of the CRISPA (ARP gene) mutant of pea (Pisum sativum; Fabaceae): A reevaluation

Abstract: The CRISPA gene of pea suppresses KNOX1 genes and UNI and functions to (1) maintain proximal-distal regions in their appropriate positions, (2) restrict excessive adaxial cell proliferation, and (3) promote laminar expansion.

Cited by 6 publications

References 65 publications

On the mechanisms of development in monocot and eudicot leaves

On the mechanisms of development in monocot and eudicot leaves

From genes to networks: The genetic control of leaf development

Understanding the molecular mechanism of leaf morphogenesis in vegetable crops conduces to breeding process

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