Targeting tip growth
نویسندگان
چکیده
منابع مشابه
Rho-GTPase–dependent filamentous actin dynamics coordinate vesicle targeting and exocytosis during tip growth
The dynamic activity of tip-localized filamentous actin (F-actin) in pollen tubes is controlled by counteracting RIC4 and RIC3 pathways downstream of the ROP1 guanosine triphosphatase promoting actin assembly and disassembly, respectively. We show here that ROP1 activation is required for both the polar accumulation and the exocytosis of vesicles at the plasma membrane apex. The apical accumula...
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Tip growth is an extreme form of polar growth modulated by both intrinsic and extrinsic spatial cues. Pollen tubes and root hairs have been used as model systems to investigate tip growth signaling in higher plants. Recent studies have focused on tip-localized Ca2+ gradients and Rho GTPases in pollen tubes and a series of mutants affecting root hair tip growth. These molecular and genetic marke...
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Recent molecular and cytological studies have greatly advanced our understanding of hyphal tip growth and nuclear migration in filamentous fungi. Mutants involved in various aspects of hyphal tip growth have been isolated. Genes involved in nuclear migration continue to be identified, including putative regulators. The role of microtubules and microtubule motor proteins in hyphal tip growth has...
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Pivalic acid dendrites grown and observed as part of the USMP-4 isothermal dendritic growth experiment aboard the space shuttle Columbia show an initial transient followed by an accelerating tip growth that may approach a constant growth rate. The mechanism responsible for this behavior is not as yet clear and may be due to experimental factors such as the long-range thermal interactions betwee...
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ژورنال
عنوان ژورنال: Science
سال: 2016
ISSN: 0036-8075,1095-9203
DOI: 10.1126/science.354.6316.1115-b