نتایج جستجو برای: plant morphology

تعداد نتایج: 533536  

2014
Benjamín Rodríguez-Garay

Volume 2 • Issue 1 • 1000e120 J Plant Biochem Physiol ISSN: 2329-9029 JPBP, an open access journal The ability to regenerate a plant from a single cell is known as totipotency, and such phenomenon occurs not only in in vitro tissue and cell culture but in specialized somatic cells that are part of whole plants in ex vitro natural conditions, constituting this asexual or vegetative processes the...

Journal: :Annals of botany 2013
Brigitte Marazzi Elena Conti Michael J Sanderson Michelle M McMahon Judith L Bronstein

BACKGROUND AND AIMS Plants display a wide range of traits that allow them to use animals for vital tasks. To attract and reward aggressive ants that protect developing leaves and flowers from consumers, many plants bear extrafloral nectaries (EFNs). EFNs are exceptionally diverse in morphology and locations on a plant. In this study the evolution of EFN diversity is explored by focusing on the ...

1999
M. C. Feller

Of the 110 000 to 180 000 hectares per year on which prescribed burning has recently been conducted in Canada, 70 000 to 150 000 hectares per year (mostly in British Columbia) has been burned for vegetation management purposes. Such purposes include silviculture, control of plant parasites, promotion of desirable plant species, and conservation of natural ecosystems. The emphasis of prescribed ...

2015
Elizabeth Varghese Mary George

Nano-sized ZnO particles of specific morphology were synthesized using the plant leaf extracts of Aloe vera. The structures, morphology, optical properties, surface area and thermal behavior of these fabricated ZnO nanoparticles were characterized by X-ray Diffraction (XRD), Scanning Electron Microscopy (SEM), Ultravioletvisible spectroscopy (UV-vis), Photoluminescence (PL)/flourescence spectro...

Journal: :Proceedings of the National Academy of Sciences of the United States of America 2010
Jianghua Chen Jianbin Yu Liangfa Ge Hongliang Wang Ana Berbel Yu Liu Yuhui Chen Guangming Li Million Tadege Jiangqi Wen Viviane Cosson Kirankumar S Mysore Pascal Ratet Francisco Madueño Guihua Bai Rujin Chen

Plant leaves are diverse in their morphology, reflecting to a large degree the plant diversity in the natural environment. How different leaf morphology is determined is not yet understood. The leguminous plant Medicago truncatula exhibits dissected leaves with three leaflets at the tip. We show that development of the trifoliate leaves is determined by the Cys(2)His(2) zinc finger transcriptio...

2008
Shohei Yamaoka Christopher J. Leaver

The regulation of mitochondrial biogenesis, subcellular distribution, morphology, and metabolism are essential for all aspects of plant growth and development. However, the molecular mechanisms involved are still unclear. Here, we describe an analysis of the three Arabidopsis thaliana orthologs of the evolutionarily conserved Miro GTPases. Two of the genes, MIRO1 and MIRO2, are transcribed ubiq...

Journal: :The Plant cell 2008
Shohei Yamaoka Christopher J Leaver

The regulation of mitochondrial biogenesis, subcellular distribution, morphology, and metabolism are essential for all aspects of plant growth and development. However, the molecular mechanisms involved are still unclear. Here, we describe an analysis of the three Arabidopsis thaliana orthologs of the evolutionarily conserved Miro GTPases. Two of the genes, MIRO1 and MIRO2, are transcribed ubiq...

2015
Addie M. Thompson Jianming Yu Marja C. P. Timmermans Patrick Schnable James C. Crants Michael J. Scanlon Gary J. Muehlbauer

The shoot apical meristem contains a pool of undifferentiated stem cells and controls initiation of all aerial plant organs. In maize (Zea mays), leaves are formed throughout vegetative development; on transition to floral development, the shoot meristem forms the tassel. Due to the regulated balance between stem cell maintenance and organogenesis, the structure and morphology of the shoot meri...

2014
Louise H Comas Hilary S Callahan Peter E Midford

Root traits vary enormously among plant species but we have little understanding of how this variation affects their functioning. Of central interest is how root traits are related to plant resource acquisition strategies from soil. We examined root traits of 33 woody species from northeastern US forests that form two of the most common types of mutualisms with fungi, arbuscular mycorrhizas (AM...

Journal: :American journal of botany 2002
Colin M Orians Marcelo Ardón Basma A Mohammad

Within-plant heterogeneity in growth, morphology, and chemistry is ubiquitous, and is commonly attributed to differences in tissue age, light availability, or previous damage by herbivores. Although these factors are important, we argue that plant vascular architecture is an underappreciated determinant of heterogeneity. Vascular architecture can restrict the transport of resources (nutrients, ...

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