Trichome, a Functional Diversity Phenotype in Plant

Xiao, Kaizhuan; Mao, Xiaohui; Lin, Yuelong

doi:10.4172/2168-9547.1000183

Cited by 50 publications

(45 citation statements)

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“…Glandular trichomes are usually present on both the vegetative and reproductive organs of Lamiaceae species . Glandular trichomes may differ in morphology and density between different plant organs or with the developmental stage of the organ or even in the same organ between the two blades . Glandular trichomes can produce, store and release plant secretions, which are a complex mixture of products of secondary metabolism such as monoterpenes, sesquiterpenes and/or phenylpropanoids .…”

Section: Introductionmentioning

confidence: 96%

“…[2 -4] Glandular trichomes may differ in morphology and density between different plant organs or with the developmental stage of the organ [5] or even in the same organ between the two blades. [6,7] Glandular trichomes can produce, store and release plant secretions, which are a complex mixture of products of secondary metabolism such as monoterpenes, sesquiterpenes and/or phenylpropanoids. [8] The production and chemical composition of plant secretions may vary qualitatively and quantitatively among plant organs and be dependent on their developmental stage.…”

Section: Introductionmentioning

confidence: 99%

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Trichome Density in Relation to Volatiles Emission and 1,8‐Cineole Synthase Gene Expression in Thymus albicans Vegetative and Reproductive Organs

Marques

Filipe

Pinto

et al. 2020

Chemistry & Biodiversity

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1,8‐Cineole is the main volatile produced by Thymus albicans Hoffmanns. & Link 1,8‐cineole chemotype. To understand the contribution of distinct plant organs to the high 1,8‐cineole production, trichome morphology and density, as well as emitted volatiles and transcriptional expression of the 1,8‐cineole synthase (CIN) gene were determined separately for T. albicans leaves, bracts, calyx, corolla and inflorescences. Scanning electron microscopy (SEM) and stereoscope microscopy observations showed the highest peltate trichome density in leaves and bracts, significantly distinct from calyx and corolla. T. albicans volatiles were collected by solid phase micro extraction (SPME) and analyzed by gas chromatography‐mass spectrometry (GC/MS) and by GC for component identification and quantification, respectively. Of the 23 components identified, 1,8‐cineole was the dominant volatile (57–93 %) in all T. albicans plant organs. The relative amounts of emitted volatiles clearly separated vegetative from reproductive organs. Gene expression of CIN was assigned to all organs analyzed and was consistent with the relatively high emission of 1,8‐cineole in leaves and bracts. Further studies will be required to analyze monoterpenoid biosynthesis by each type of glandular trichome.

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Section: Introductionmentioning

confidence: 96%

Section: Introductionmentioning

confidence: 99%

Trichome Density in Relation to Volatiles Emission and 1,8‐Cineole Synthase Gene Expression in Thymus albicans Vegetative and Reproductive Organs

Marques

Filipe

Pinto

et al. 2020

Chemistry & Biodiversity

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“…Plant trichomes are epidermal outgrowths that have many different physical and physiological functions and vary in structure on different organs [7,8]. Cotton plants vary in the density of trichomes on different vegetative parts, from being highly pubescent to glabrous.…”

Section: Introductionmentioning

confidence: 99%

Genetic Identification and Transcriptome Analysis of Lintless and Fuzzless Traits in Gossypium arboreum L.

Liu

Moncuquet

Zhu

et al. 2020

IJMS

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Cotton fibres, as single cells arising from the seed coat, can be classified as lint and fuzz according to their final length. Gossypium arboreum is a cultivated diploid cotton species and a potential donor of the A subgenome of the more widely grown tetraploid cottons. In this study, we performed genetic studies on one lintless and seven fuzzless G. arboreum accessions. Through association and genetic linkage analyses, a recessive locus on Chr06 containing GaHD-1 was found to be the likely gene underlying the lintless trait. GaHD-1 carried a mutation at a splicing acceptor site that resulted in alternative splicing and a deletion of 247 amino acid from the protein. The regions containing GaGIR1 and GaMYB25-like were found to be associated with fuzz development in G. arboreum, with the former being the major contributor. Comparative transcriptome analyses using 0-5 days post-anthesis (dpa) ovules from lintless, fuzzless, and normal fuzzy seed G. arboreum accessions revealed gene modules and hub genes potentially important for lint and fuzz initiation and development. Three significant modules and 26 hub genes associated with lint fibre initiation were detected by weighted gene co-expression network analysis. Similar analyses identified three vital modules and 10 hub genes to be associated with fuzz development. The findings in this study contribute to understanding the complex molecular mechanism(s) regulating fibre initiation and development and indicate that G. arboreum may have fibre developmental pathways different from tetraploid cotton. It also provides candidate genes for further investigation into modifying fibre development in G. arboreum.

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“…both pre-and post-ingestion defences against caterpillars (Kariyat, Smith, Stephenson, De Moraes, & Mescher, 2017;Tattini et al, 2007). Trichomes are also considered as important theoretical and phylogenetic significance and useful in phylogenetic verification (Xiao et al, 2017). From the Figure 7(b,c), it is understood that trichomes seemed to be an extension/elongation of the reticulate-foveate seed surface.…”

Section: Discussionmentioning

confidence: 99%

“…The seed surface ornamentation is expressed as reticulate-verrucate (Pinar, Adiguzel, & Geven, 2007) and verrucate (Atceken, Dural, & Citak, 2016) reticulate foveate, reticulate, verruculate, reticulate-ocellate, ocellate, ruminate (Karaismailoglu, 2019). The density, length, and distribution pattern of trichomes on the seed coat play corresponding physiological roles in resisting natural stresses because of their specific structure (Xiao et al, 2017). Trichomes have an extensive role in plantenvironment interactions (Figueiredo, Resende, Morales, Gonçalves, & Da Silva, 2013;Mershon, Becker, & Bickford, 2015;Wei et al, 2013).…”

Section: Discussionmentioning

confidence: 99%

SEM and light microscopic studies in seeds of Hibiscus surattensis L. and phylogenetic attributes in Puducherry region, India

Ilakiya

Ramamoorthy

2020

Geology, Ecology, and Landscapes

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The micro-morphological and scanning electron microscopic (SEM) studies in seeds of Hibiscus surattensis L. has brought out five interesting as well as taxonomically and phylogenetic important traits for the first time. Hibiscus surattensis L. belongs to the family Malvaceae, located at Puducherry region, India. 1. There is a change in the number of locules from pentacarpellary in the ovary during seed maturation and tetra-carpellary after seed maturation in the capsule; 2. Capsules contain both aborted and fully matured seeds recording an average of 4 aborted in 10 capsules; 3. Trichome on seeds consisted of bundle of unicellular finger-like structures, non-glandular and appressed; more importantly hilum is lined with trichomes; 4. Trichomes originate from the outer seed coat as extension/elongation of reticulate-foveatetype seed surface. 5. Embryo was folded occupying both poles and represented approximately the one-third of embryo. Size of the seed, colour, and shape of the seed, surface patterns of seed were examined using SEM. Factors responsible for the production of abortive seeds, functional attributes of non-glandular trichomes and other features are discussed in detail with relevant SEM and microscopic images. Further, phylogenetic importance in elucidating evolutionary clade is also explained. The partial sequence of chloroplast DNA of Hibiscus surattensis L. and neighbourhood joining trees are done for the first time in the study plant growing in India.

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Trichome, a Functional Diversity Phenotype in Plant

Cited by 50 publications

References 0 publications

Trichome Density in Relation to Volatiles Emission and 1,8‐Cineole Synthase Gene Expression in Thymus albicans Vegetative and Reproductive Organs

Trichome Density in Relation to Volatiles Emission and 1,8‐Cineole Synthase Gene Expression in Thymus albicans Vegetative and Reproductive Organs

Genetic Identification and Transcriptome Analysis of Lintless and Fuzzless Traits in Gossypium arboreum L.

SEM and light microscopic studies in seeds of Hibiscus surattensis L. and phylogenetic attributes in Puducherry region, India

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