An acetolysis-resistant membrane investing tapetum and sporogenous tissue in the anthers of certain Compositae

J. Heslop-Harrison

doi:10.1139/b69-074

An acetolysis-resistant membrane investing tapetum and sporogenous tissue in the anthers of certain Compositae

Canadian Journal of Botany ◽

10.1139/b69-074 ◽

1969 ◽

Vol 47 (4) ◽

pp. 541-542 ◽

Cited By ~ 59

Author(s):

J. Heslop-Harrison

Keyword(s):

Pollen Grain ◽

Sporogenous Tissue ◽

Spore Mass ◽

Parietal Tapetum

After the breakup of the meiotic tetrads, it is usual in the Compositae for the cells of the previously parietal tapetum to invade the anther loculus and form a Plasmodium ramifying between the young spores. In species of three tribes, Helenieae, Heliantheae, and Ambrosieae, an extratapetal membrane is formed at this time, which totally encloses the tapetum and the spore mass. The extratapetal membrane is resistant to acetolysis, and is considered to be chemically similar to the sporopollenin of the pollen grain exine.

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Pollen Grain Morphology of Citrus (Rutaceae) in Iraq

International Conference on Plant, Marine and Environmental Sciences (PMES-2015) Jan. 1-2, 2015 Kuala Lumpur (Malaysia) ◽

10.15242/iicbe.c0115048 ◽

2015 ◽

Cited By ~ 1

Keyword(s):

Grain Morphology ◽

Pollen Grain ◽

Pollen Grain Morphology

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Pollen grain hormones of date palm pollinator cultivars and their relationship with hormones of different stages of ‘Piarom’ date fruit growth

Scientia Horticulturae ◽

10.1016/j.scienta.2021.110389 ◽

2021 ◽

Vol 288 ◽

pp. 110389

Author(s):

Ali Reza Shahsavar ◽

Asma Shahhosseini

Keyword(s):

Date Palm ◽

Pollen Grain ◽

Fruit Growth ◽

Date Fruit

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Productivity, pathogenicity, host range, and spore mass-propagation of local strain of Mattesia sp. isolated from insect cadavers of certain stored grain pests in Egypt

Egyptian Journal of Biological Pest Control ◽

10.1186/s41938-019-0195-8 ◽

2019 ◽

Vol 29 (1) ◽

Author(s):

Ahlam Ahmed Alfazairy ◽

Yasien Mohamed Gamal Zedan El-Abed ◽

Hanan Mohamed Ramadan ◽

Hedaya Hamza Karam

Keyword(s):

Galleria Mellonella ◽

Larval Mortality ◽

Maximum Yield ◽

Local Strain ◽

Rhyzopertha Dominica ◽

Stored Grain ◽

Spore Yield ◽

Long Term Storage ◽

Spore Mass

AbstractAverage yields of Mattesia spores (spore productivity) had varied from a minimum yield (0.17 × 107 spores) for Laemophloeus turcicus adult to a maximum yield (7.46 × 107 spores) for Plodia interpunctella larva. Comparatively, the highest increase in Mattesia spore yield, recorded from P. interpunctella larva (7.46 × 107 spores) over the lowest one, estimated for L. turcicus adult (0.17 × 107 spores), was nearly 44-fold. The increase in Mattesia spore yields that calculated from the other hosts (P. interpunctella pupa or moth; Galleria mellonella larva; Rhyzopertha dominica adult; Sitophilus zeamais), over that estimated for L. turcicus adult, was less than 10-fold (6–9-fold). Based on the weight of 1 g of the insect host infected with Mattesia sp., small stored grain insect hosts (e.g. L. turcicus, S. zeamais, and R. dominica) seemed to achieve Mattesia spore yields more than the larger ones (e.g. P. interpunctella). The increase in spore yields over that used for the inoculum, based on an average of 25 P. interpunctella larvae per bioassay container, was ca. 2 to 31-fold. These results revealed that the Indianmeal moth, P. interpunctella, could serve as a potential host for mass propagating the isolated entomopathogenic protozoan, Mattesia sp. Besides Mattesia larval mortality, survivors of Mattesia infection suffered deformities and noticeable undersized pupae or adults than the control ones. Also, many copulated moths (ca.46%) were unable to become separated after copulation until they had died. Bioassay of siftings, obtained from L. turcicus-protozoan-infected stock cultures, was carried out in order to emphasize the suppressive potent role of such protozoan entomopathogens in long-term storage. With the highest tested concentration of the studied siftings (10%), mortality responses due to Mattesia infection ranged from 13 to 68% at 14–169 days post-treatment. The corresponding figures for Adelina infection were 7–42%.

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