TAPETUM - A MISUNDERSTOOD TOPIC
Journal of Anatomical Sciences, 2020 Quite frequently students are asked to explain tapetum. We found that various books of anatomy have different explanations. Students are confused as to which book must be followed for its explanation. We are therefore writing an inference drawn by consulting books and also by observing the human brain in cadavers.
P K Sharma, Sonia Jaiswal
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ps2, the gene responsible for functional sterility in tomato, due to non-dehiscent anthers, is the result of a mutation in a novel polygalacturonase gene [PDF]
, 2009 The recessive mutation ps-2, which appeared spontaneously in tomato, confers functional male sterility due to non-dehiscent anthers. In this study, we isolated and characterized the PS-2 gene.
Gorguet, B.J.M. +4 more
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Origin and structure of Ubisch bodies in Pinus sylvestris
Acta Societatis Botanicorum Poloniae, 2014 In Pinus sylvestris Ubisch bodies are produced repeatedly, and each crop is formed at a distinct phase in the secretory cycles of tapetal cells. While each production has a Ubisch body wall similar to the then current state of the exine with regard to ...
John R. Rowley, Björn Walles
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Evolution of an Apomixis-Specific Allele Class in Supernumerary Chromatin of Apomictic Boechera
Frontiers in Plant Science, 2022 Asexual reproduction through seeds in plants (i.e., apomixis) is a heritable trait, and apomixis- linked loci have been identified in multiple species. However, direct identification of genomic elements is typically hindered as apomixis-linked loci and ...
Martin Mau +8 more
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Butterfly Optics Exceed the Theoretical Limits of Conventional Apposition Eyes [PDF]
, 1987 Optical experiments on butterfly compound eyes show that they have angular sensitivities narrower than expected from conventional apposition eyes. This superior performance is explained by a theoretical model where the cone stalk is considered as a ...
Hateren, J.H. van,, Nilsson, D.-E.,
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Epigenetic Regulation of Heat Stress in Plant Male Reproduction
Frontiers in Plant Science, 2022 In flowering plants, male reproductive development is highly susceptible to heat stress. In this mini-review, we summarized different anomalies in tapetum, microspores, and pollen grains during anther development under heat stress.
Shikha Malik, Dazhong Zhao
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Pollen development in Mill. (Annonaceae). Implications for the evolution of aggregated pollen [PDF]
, 2009 In most flowering plants, pollen is dispersed as monads. However, aggregated pollen shedding in groups of four or more pollen grains has arisen independently several times during angiosperm evolution.
Lora, Jorge +4 more
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Characteristics of Pollen from Transgenic Lines of Apple Carrying the Exogenous CpTI Gene
Horticultural Plant Journal, 2015 It is fundamental for gene transformation and ecosystem hazard evaluation to study the pollen characteristics of transgenic plants. In this research, the characteristics of pollen from 7- or 8-year-old transgenic apple plants carrying an exogenous CpTI ...
Shi Xiaoxin +5 more
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Defective Tapetum Cell Death 1 (DTC1) Regulates ROS Levels by Binding to Metallothionein during Tapetum Degeneration [PDF]
Plant Physiology, 2015 After meiosis, tapetal cells in the innermost anther wall layer undergo program cell death (PCD)-triggered degradation. This step is essential for microspore development and pollen wall maturation. We identified a key gene, Defective Tapetum Cell Death 1 (DTC1), that controls this degeneration by modulating the dynamics of reactive oxygen species (ROS)
Jakyung Yi +7 more
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Contralateral interictal spikes are related to tapetum damage in left temporal lobe epilepsy. [PDF]
, 2014 OBJECTIVE: In temporal lobe epilepsy (TLE), the epileptogenic focus is focal and unilateral in the majority of patients. A key characteristic of focal TLE is the presence of subclinical epileptiform activity in both the ictal and contralateral healthy ...
Ahmadi +39 more
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