Cytology and Morphogenesis of Pollen and Spores

Hesse, Michael

doi:10.1007/978-3-642-76293-2_3

Cited by 17 publications

(9 citation statements)

References 155 publications

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“…The vicinity of a callose-like layer is important because earlier studies have shown that callose probably promotes structure-forming processes at the interface. The importance of callose for sporoderm development has been emphasised earlier (Barnes & Blackmore, 1986;Blackmore & Barnes, 1990;Hesse, 1995;Blackmore et al, 2007Blackmore et al, , 2010, shown sub-structurally (Gabarayeva et al, 2011a(Gabarayeva et al, , 2011b and is in accordance with the data on callosedeficiency mutants (Dong et al, 2005;Nishikawa et al, 2005;Ariizumi & Toriyama, 2011).…”

Section: Modelling Of Exine 243supporting

confidence: 81%

Experimental modelling of exine-like structures

Gabarayeva

Grigorjeva

2013

Grana

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Section: Modelling Of Exine 243supporting

confidence: 81%

Experimental modelling of exine-like structures

Gabarayeva

Grigorjeva

2013

Grana

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“…Pollen development is also typified by the diverse transformation of vacuoles and the biogenesis and movement of ER and Golgi bodies. Observations of ultrastructural changes in vacuoles, ER, and Golgi suggest that these organelles are linked to the accumulation of metabolites necessary for pollen development, pollen germination, and tube growth (Hesse, 1990;Bedinger, 1992;McCormick, 1993;Yamamoto et al, 2003). H + -ATPases have been reported to be activated by the mobilization of the H + pool and to play key roles in Golgi organization during pollen development (Dettmer et al, 2005).…”

Section: Introductionmentioning

confidence: 99%

Endoplasmic Reticulum– and Golgi-Localized Phospholipase A2 Plays Critical Roles in Arabidopsis Pollen Development and Germination

Kim

Bahn

et al. 2011

The Plant Cell

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The phospholipase A 2 (PLA 2 ) superfamily of lipolytic enzymes is involved in a number of essential biological processes, such as inflammation, development, host defense, and signal transduction. Despite the proven involvement of plant PLA 2 s in many biological functions, including senescence, wounding, elicitor and stress responses, and pathogen defense, relatively little is known about plant PLA 2 s, and their genes essentially remain uncharacterized. We characterized three of four Arabidopsis thaliana PLA 2 paralogs (PLA 2 -b, -g, and -d) and found that they (1) are expressed during pollen development, (2) localize to the endoplasmic reticulum and/or Golgi, and (3) play critical roles in pollen development and germination and tube growth. The suppression of PLA 2 using the RNA interference approach resulted in pollen lethality. The inhibition of pollen germination by pharmacological PLA 2 inhibitors was rescued by a lipid signal molecule, lysophosphatidyl ethanolamine. Based on these results, we propose that plant reproduction, in particular, male gametophyte development, requires the activities of the lipid-modifying PLA 2 s that are conserved in other organisms.

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“…It could be that all these SAP-bearing branching units were just hidden inside the callose layer from the very beginning of glycocalyx establishment (see Figures 2A, 3A). This gives us an additional argument for the importance of the role of callose, which was emphasised earlier (Dunbar, 1973;Barnes & Blackmore, 1986;Worrall et al, 1992;Hesse, 1995;Dong et al, 2005;Nishikawa et al, 2005;Anger & Weber, 2006;Gabarayeva & Hemsley, 2006;Blackmore et al, 2007Blackmore et al, , 2010Gabarayeva et al, 2009a): being a swelling colloid (a gel; see Ball, 1994), the callose envelope may behave actively in respect to the adjacent macromolecular layer (glycocalyx), promoting a structure-forming process at the interface.…”

Section: Ectexine Development and Its Underlying Causementioning

confidence: 68%