Adaxial–abaxial polarity: The developmental basis of leaf shape diversity

Fukushima, Kenji; Hasebe, Mitsuyasu

doi:10.1002/dvg.22728

Cited by 65 publications

(61 citation statements)

References 159 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Of the genes that are upregulated in Part III, one (i.e., NidaYAB5; Fig. 4e, f, h) attracted our special attention because it is the ortholog of a known abaxial gene (i.e., YAB5) 24 and because ectopic expression of adaxial/abaxial genes have been shown to play key roles in the formation of outgrowths on leaf-like structures [48][49][50][51][52] . To gain some insights into its function, we first performed detailed mRNA in situ hybridization studies ( Fig.…”

Section: Cellular Basis Of Pseudonectary Developmentmentioning

confidence: 99%

The morphology, molecular development and ecological function of pseudonectaries on Nigella damascena (Ranunculaceae) petals

Liao

Zhao

et al. 2020

Nat Commun

View full text Add to dashboard Cite

Pseudonectaries, or false nectaries, the glistening structures that resemble nectaries or nectar droplets but do not secrete nectar, show considerable diversity and play important roles in plant-animal interactions. The morphological nature, optical features, molecular underpinnings and ecological functions of pseudonectaries, however, remain largely unclear. Here, we show that pseudonectaries of Nigella damascena (Ranunculaceae) are tiny, regional protrusions covered by tightly arranged, non-secretory polygonal epidermal cells with flat, smooth and reflective surface, and are clearly visible even under ultraviolet light and bee vision. We also show that genes associated with cell division, chloroplast development and wax formation are preferably expressed in pseudonectaries. Specifically, NidaYABBY5, an abaxial gene with ectopic expression in pseudonectaries, is indispensable for pseudonectary development: knockdown of it led to complete losses of pseudonectaries. Notably, when flowers without pseudonectaries were arrayed beside those with pseudonectaries, clear differences were observed in the visiting frequency, probing time and visiting behavior of pollinators (i.e., honey bees), suggesting that pseudonectaries serve as both visual attractants and nectar guides.

show abstract

Section: Cellular Basis Of Pseudonectary Developmentmentioning

confidence: 99%

The morphology, molecular development and ecological function of pseudonectaries on Nigella damascena (Ranunculaceae) petals

Liao

Zhao

et al. 2020

Nat Commun

View full text Add to dashboard Cite

show abstract

“…On the adaxial side, the elongated and densely packed palisade cells are optimized for light harvesting. On the abaxial side, the loose spongy cells and the air spaces facilitate gas exchange (De Lucia et al, 1991;Fukushima and Hasebe, 2014). This raises the possibility that the different minerals and their distributions reflect these major functions.…”

Section: Discussionmentioning

confidence: 99%

Mineral Deposits in Ficus Leaves: Morphologies and Locations in Relation to Function

et al. 2017

View full text Add to dashboard Cite

trees are adapted to diverse environments and have some of the highest rates of photosynthesis among trees. leaves can deposit one or more of the three major mineral types found in leaves: amorphous calcium carbonate cystoliths, calcium oxalates, and silica phytoliths. In order to better understand the functions of these minerals and the control that the leaf exerts over mineral deposition, we investigated leaves from 10 species from vastly different environments (Rehovot, Israel; Bologna, Italy; Issa Valley, Tanzania; and Ngogo, Uganda). We identified the mineral locations in the soft tissues, the relative distributions of the minerals, and mineral volume contents using microcomputed tomography. Each species is characterized by a unique 3D mineral distribution that is preserved in different environments. The mineral distribution patterns are generally different on the adaxial and abaxial sides of the leaf. All species examined have abundant calcium oxalate deposits around the veins. We used micromodulated fluorimetry to examine the effect of cystoliths on photosynthetic efficiency in two species having cystoliths abaxially and adaxially () or only abaxially (). In , both adaxial and abaxial cystoliths efficiently contributed to light redistribution inside the leaf and, hence, increased photosynthetic efficiency, whereas in, the abaxial cystoliths did not increase photosynthetic efficiency.

show abstract

“…It has been proposed that the development of a flat lamina was a key event in leaf evolution as it enables this organ to capture light more efficiently and to generate complex organ morphologies, such as stamens (Yamaguchi et al, 2012). Arabidopsis leaf growth occurs in cells located in the intersection of abaxial and adaxial zones and partially depends on the participation of genes of two subfamilies of the WUSCHEL (WUS) homeobox (WOX) transcription factor family: WOX1/STF and WOX3/PRS (Yamaguchi et al, 2012;Fukushima and Hasebe, 2014). In Arabidopsis, the 15 members of the WOX family are involved in different aspects of plant development (Mayer et al, 1998;Haecker et al, 2004;Park et al, 2005;Sarkar et al, 2007).…”

Section: Leaf Morphogenesismentioning

confidence: 99%

Role of transcriptional regulation in the evolution of plant phenotype: A dynamic systems approach

Rodríguez-Mega

Piñeyro‐Nelson

Gutiérrez

et al. 2015

Developmental Dynamics

View full text Add to dashboard Cite

A growing body of evidence suggests that alterations in transcriptional regulation of genes involved in modulating development are an important part of phenotypic evolution, and this can be documented among species and within populations. While the effects of differential transcriptional regulation in organismal development have been preferentially studied in animal systems, this phenomenon has also been addressed in plants. In this review, we summarize evidence for cis-regulatory mutations, trans-regulatory changes and epigenetic modifications as molecular events underlying important phenotypic alterations, and thus shaping the evolution of plant development. We postulate that a mechanistic understanding of why such molecular alterations have a key role in development, morphology and evolution will have to rely on dynamic models of complex regulatory networks that consider the concerted action of genetic and nongenetic components, and that also incorporate the restrictions underlying the genotype to phenotype mapping process. Developmental Dynamics 244:1074-1095, 2015. V C 2015 Wiley Periodicals, Inc.Key words: phenotypic evolution; gene regulation; epigenetics; evo-devo; gene regulatory networks IntroductionIn this review article, we will provide evidence to connect natural phenotypic variation in plants to heritable changes in epigenetic and transcriptional regulation and discuss how plant phenotypic alteration can be explained by the relative position of regulators within gene regulatory networks. In the first section of the article, we show how plant phenotypic variation can be generated by different mechanisms of gene transcriptional regulation. The second section comprises diverse evidence for plant phenotypic evolution related to three main regulatory alterations: epigenetic modifications, cis-regulatory changes, and trans-regulatory changes. We also briefly talk about the fitness costs of natural regulatory variation in plant populations. Finally, we address the importance of a systems perspective for understanding how genetic and epigenetic alterations map onto phenotypic changes by altering complex gene regulatory networks and affecting the evolution of plant phenotype, and discuss some of the technological approaches that could advance this field.

show abstract

Adaxial–abaxial polarity: The developmental basis of leaf shape diversity

Cited by 65 publications

References 159 publications

The morphology, molecular development and ecological function of pseudonectaries on Nigella damascena (Ranunculaceae) petals

The morphology, molecular development and ecological function of pseudonectaries on Nigella damascena (Ranunculaceae) petals

Mineral Deposits in Ficus Leaves: Morphologies and Locations in Relation to Function

Role of transcriptional regulation in the evolution of plant phenotype: A dynamic systems approach

Contact Info

Product

Resources

About