Heteroblasty in epiphytic bromeliads: functional implications for species in understorey and exposed growing sites

Beyschlag, Joachim; Zotz, Gerhard

doi:10.1093/aob/mcx048

Cited by 10 publications

(7 citation statements)

References 34 publications

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“…Adaptation involves both physiology and morphology, and may be genetic or developmental in origin. Beyschlag and Zotz (2017) address a particularly extreme developmental change in Tillandsioid bormeliads, where individuals transform from small plants with narrow leaves to plants that form tanks and store water at the bases of broad leaves. Their paper shows the value of modelling and exploits comparisons between two species adapted to exposed, sunny sites and two from the understory.…”

Section: Adaptation and Morphologymentioning

confidence: 99%

Morphology, adaptation and speciation

Heslop-Harrison

2017

Annals of Botany

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The study of plant evolution and development in a phylogenetic context has accelerated research advances in both areas over the last decade. The addition of a robust phylogeny for plant taxa based on DNA as well as morphology has given a strong context for this research. Genetics and genomics, including sequencing of many genes, and a better understanding of non-genetic, responsive changes, by plants have increased knowledge of how the different body forms of plants have arisen. Here, I overview the papers in this Special Issue of Annals of Botany on Morphological Adaptation, bringing together a range of papers that link phylogeny and morphology. These lead to models of development and functional adaptation across a range of plant systems, with implications for ecology and ecosystems, as well as development and evolution.

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Section: Adaptation and Morphologymentioning

confidence: 99%

Morphology, adaptation and speciation

Heslop-Harrison

2017

Annals of Botany

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“…It is also well-known that leaf morphology is a key contributor to canopy structure and affects light distribution, ventilation permeability, and light energy utilization efficiency of a population ( Bhagsari and Brown, 1986 ; Sarlikioti et al, 2011 ). Heterophylly can allow more efficient use of light energy by affecting canopy structure, gas exchange, and light interception of the lower canopy ( Hejnák et al, 2014 ; Beyschlag and Zotz, 2017 ). For example, relatively narrow leaves on top of a plant allow more light through to the middle and lower leaves, leading to increased photosynthetic activity throughout the canopy.…”

Section: Introductionmentioning

confidence: 99%

QTL and candidate genes for heterophylly in soybean based on two populations of recombinant inbred lines

Chen

Liu

et al. 2022

Front. Plant Sci.

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Heterophylly, the existence of different leaf shapes and sizes on the same plant, has been observed in many flowering plant species. Yet, the genetic characteristics and genetic basis of heterophylly in soybean remain unknown. Here, two populations of recombinant inbred lines (RILs) with distinctly different leaf shapes were used to identify loci controlling heterophylly in two environments. The ratio of apical leaf shape (LSUP) to basal leaf shape (LSDOWN) at the reproductive growth stage (RLS) was used as a parameter for classifying heterophylly. A total of eight QTL were detected for RLS between the two populations and four of them were stably identified in both environments. Among them, qRLS20 had the largest effect in the JS population, with a maximum LOD value of 46.9 explaining up to 47.2% of phenotypic variance. This locus was located in the same genomic region as the basal leaf shape QTL qLSDOWN20 on chromosome 20. The locus qRLS19 had the largest effect in the JJ population, with a maximum LOD value of 15.2 explaining up to 27.0% of phenotypic variance. This locus was located in the same genomic region as the apical leaf shape QTL qLSUP19 on chromosome 19. Four candidate genes for heterophylly were identified based on sequence differences among the three parents of the two mapping populations, RT-qPCR analysis, and gene functional annotation analysis. The QTL and candidate genes detected in this study lay a foundation for further understanding the genetic mechanism of heterophylly and are invaluable in marker-assisted breeding.

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“…As a result, the leaves formed by a single plant can display a remarkable diversity of forms, which is known as heterophylly. Heterophylly may all more e cient use of light energy through affects on canopy structure, gas exchange and light interception of the lower canopy (Hejnák et al 2014;Beyschlag et al 2017). For example, relatively narrow leaves on top of a plant allow light through to the middle and lower leaves for photosynthetic activity throughout the canopy, while relatively bigger and rounder leaves emerging from middle and lower nodes facilitate absorption of scattered light.…”

Section: Introductionmentioning

confidence: 99%

Characterization of the Genetic Basis and Biological Significance of Heteroblasty in Soybean

Chen¹,

Chen²,

Ai³

et al. 2021

Preprint

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Leaf morphology, as a critical measure of plant architecture, has been associated with soybean yield and quality. As yet, conclusive investigations into the genetic basis and biological significance of heteroblasty in soybean remain sparse. To identify and biologically characterize the quantitative trait loci (QTLs) influencing heteroblasty in soybean, 11 traits associated with leaf morphology, seed quality, and grain yield were observed for two recombinant inbred line (RIL) populations grown in two environments. Values of broad-sense heritability (H2) for leaf traits in two RIL populations varied from 0.62 to 0.99. These high heritabilities, taken together with the Kurtosis and Skewness values indicate that the phenotypic variation in leaf morphology observed for both RIL populations are mainly controlled by quantitative traits. The three observed leaf morphology traits exhibited significant correlations (P < 0.05) with more than half of the grain yield and seed quality traits, with correlation coefficients varying from − 0.40 to 0.43, which suggests that leaf morphology can significantly influence soybean yield and quality. A total of 11 QTLs were detected for leaf morphology, with logarithm of odds (LOD) values ranging from 3.40 to 89.6, which accounted for 1.38 ~ 74.53% of genetic variation. Eight of these loci for leaf morphology co-located with those for seed quality and grain yield, which coincided large and extensive leaf morphologies that contributed to seed quality and grain yield formation. Overall, these results provide important information for breeding high yielding crop varieties with improved quality traits produced through optimization of leaf morphology.

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Heteroblasty in epiphytic bromeliads: functional implications for species in understorey and exposed growing sites

Abstract: The effects of changes in leaf morphology and leaf architecture on plant light capture may explain the common occurrence of heteroblastic species in the understorey of Neotropical forests, which does not negate a simultaneous positive effect of heteroblasty on plant water relations.

Cited by 10 publications

References 34 publications

Morphology, adaptation and speciation

Morphology, adaptation and speciation

QTL and candidate genes for heterophylly in soybean based on two populations of recombinant inbred lines

Characterization of the Genetic Basis and Biological Significance of Heteroblasty in Soybean

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