Regional and cell-specific gene expression patterns during petal development

We investigated gene expression patterns that occur during tobacco petal development. Two petal mRNA classes were identified that are present at elevated levels relative to other organs. One class is represented equally in the unpigmented tube and pigmented limb regions of the corolla. The other cla...

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Published in:The Plant cell Vol. 4; no. 11; pp. 1383 - 1404
Main Authors: Drews, Gary N., Beals, Thomas P., Bui, Anhthu Q., Goldberg, Robert B.
Format: Journal Article
Language:English
Published: Rockville, MD American Society of Plant Physiologists 01-11-1992
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Abstract We investigated gene expression patterns that occur during tobacco petal development. Two petal mRNA classes were identified that are present at elevated levels relative to other organs. One class is represented equally in the unpigmented tube and pigmented limb regions of the corolla. The other class accumulates preferentially within the limb region. Limb-specific mRNAs accumulate at different times during corolla development, peak in prevalence prior to flower opening, and are localized in either the epidermal cell layers or the mesophyll. The epidermal- and mesophyll-specific mRNAs change abruptly in concentration within a narrow zone of the limb/tube border. Preferential accumulation of at least one limb-specific mRNA occurs within the corolla upper region early in development prior to limb maturation and pigment accumulation. Limb-specific mRNAs also accumulate preferentially within the unpigmented corolla limb region of Nicotiana sylvestris, a diploid progenitor of tobacco. Runoff transcription studies and experiments with chimeric beta-glucuronidase genes showed that petal gene organ, cell, and region specificities are controlled primarily at the transcriptional level. We conclude that during corolla development transcriptional processes act coordinately on limb-specific genes to regulate their regional expression patterns, but act individually on these genes to define their cell specificities.
AbstractList We investigated gene expression patterns that occur during tobacco petal development. Two petal mRNA classes were identified that are present at elevated levels relative to other organs. One class is represented equally in the unpigmented tube and pigmented limb regions of the corolla. The other class accumulates preferentially within the limb region. Limb-specific mRNAs accumulate at different times during corolla development, peak in prevalence prior to flower opening, and are localized in either the epidermal cell layers or the mesophyll. The epidermal- and mesophyll-specific mRNAs change abruptly in concentration within a narrow zone of the limb/tube border. Preferential accumulation of at least one limb-specific mRNA occurs within the corolla upper region early in development prior to limb maturation and pigment accumulation. Limb-specific mRNAs also accumulate preferentially within the unpigmented corolla limb region of Nicotiana sylvestris, a diploid progenitor of tobacco. Runoff transcription studies and experiments with chimeric β-glucuronidase genes showed that petal gene organ, cell, and region specificities are controlled primarily at the transcriptional level. We conclude that during corolla development transcriptional processes act coordinately on limb-specific genes to regulate their regional expression patterns, but act individually on these genes to define their cell specificities.
We investigated gene expression patterns that occur during tobacco petal development. Two petal mRNA classes were identified that are present at elevated levels relative to other organs. One class is represented equally in the unpigmented tube and pigmented limb regions of the corolla. The other class accumulates preferentially within the limb region. Limb-specific mRNAs accumulate at different times during corolla development, peak in prevalence prior to flower opening, and are localized in either the epidermal cell layers or the mesophyll. The epidermal- and mesophyll-specific mRNAs change abruptly in concentration within a narrow zone of the limb/tube border. Preferential accumulation of at least one limb-specific mRNA occurs within the corolla upper region early in development prior to limb maturation and pigment accumulation. Limb-specific mRNAs also accumulate preferentially within the unpigmented corolla limb region of Nicotiana sylvestris, a diploid progenitor of tobacco. Runoff transcription studies and experiments with chimeric beta-glucuronidase genes showed that petal gene organ, cell, and region specificities are controlled primarily at the transcriptional level. We conclude that during corolla development transcriptional processes act coordinately on limb-specific genes to regulate their regional expression patterns, but act individually on these genes to define their cell specificities.
Author Bui A.Q
Beals T.P
Drews G.N
Goldberg R.B
AuthorAffiliation Department of Biology, University of California, Los Angeles 90024-1606
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ContentType Journal Article
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Issue 11
Keywords Flower
Gene expression
Nicotiana tabacum
Pigmentation
Regulation(control)
Specificity
Gene
Dicotyledones
Angiospermae
Development
Spermatophyta
Solanaceae
Localization
Cell
Histochemistry
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PublicationTitle The Plant cell
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PublicationYear 1992
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Snippet We investigated gene expression patterns that occur during tobacco petal development. Two petal mRNA classes were identified that are present at elevated...
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StartPage 1383
SubjectTerms arn mensajero
arn messager
Biological and medical sciences
cell differentiation
Chalconoids
Color
corola
Corolla
corolle
Developmental biology
diferenciacion celular
differenciation cellulaire
Epidermal cells
expresion genica
expression des genes
Flavonoids - metabolism
floracion
floraison
flowering
Fundamental and applied biological sciences. Psychology
Gels
Gene Expression
Gene Expression Regulation
Gene Library
Genes
Genes, Plant - genetics
genetica
genetics
genetique
Glucuronidase - biosynthesis
Glucuronidase - genetics
In Situ Hybridization
Messenger RNA
Molecular and cellular biology
Molecular genetics
Morphogenesis - genetics
nicotiana
Nicotiana - anatomy & histology
Nicotiana - genetics
nicotiana tabacum
Organ Specificity
Oxidoreductases - genetics
Oxidoreductases Acting on CH-CH Group Donors
Petals
Plant cells
Plants, Toxic
Recombinant Fusion Proteins - biosynthesis
RNA, Messenger - analysis
Time Factors
Tissue Distribution
Transcription, Genetic
Title Regional and cell-specific gene expression patterns during petal development
URI https://www.jstor.org/stable/3869510
https://www.ncbi.nlm.nih.gov/pubmed/1477554
https://pubmed.ncbi.nlm.nih.gov/PMC160226
Volume 4
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