Heterophylly inEryngium vesiculosum(Umbelliferae)
نویسندگان
چکیده
منابع مشابه
Hormonal heterophylly, invertebrate endocrinology, and phytohormones.
Hormonal heterophylly, the response of tissues in one phylum to hormones that occur naturally in others, is of current general interest not only to the invertebrate endocrinologist but also to the oncologist. The fact that certain mammalian tissues respond metabolically to hormones elaborated in invertebrates and plants was substantiated during the course of a conference, entitled "Conference W...
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This study investigates the functional significance of heterophylly in Ginkgo biloba, where leaves borne on short shoots are ontogenetically distinct from those on long shoots. Short shoots are compact, with minimal internodal elongation; their leaves are supplied with water through mature branches. Long shoots extend the canopy and have significant internodal elongation; their expanding leaves...
متن کاملHow Do Plants and Phytohormones Accomplish Heterophylly, Leaf Phenotypic Plasticity, in Response to Environmental Cues
Plant species are known to respond to variations in environmental conditions. Many plant species have the ability to alter their leaf morphology in response to such changes. This phenomenon is termed heterophylly and is widespread among land plants. In some cases, heterophylly is thought to be an adaptive mechanism that allows plants to optimally respond to environmental heterogeneity. Recently...
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The plant hormone abscisic acid (ABA) induces a developmental switch in the aquatic fern Marsilea quadrifolia, causing the formation of aerial type characteristics, including the elongation of petioles and roots, a change in leaf morphology, the expansion of leaf surface area, and the shortening of the internodes. A number of ABA-responsive heterophylly (ABRH) genes are induced early during the...
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The evolution of thorn-like structures in plants on oceanic islands that lack mammalian and reptilian herbivores is puzzling, as is their tendency toward juvenile-adult leaf dimorphism. We propose that these traits arose in Cyanea (Campanulaceae) on Hawaii as mechanical and visual defenses against herbivory by flightless geese and goose-like ducks that were extirpated by Polynesians within the ...
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ژورنال
عنوان ژورنال: New Zealand Journal of Botany
سال: 1984
ISSN: 0028-825X,1175-8643
DOI: 10.1080/0028825x.1984.10425232