The remarkable biology of pollen.

Bedinger, Patricia A.

doi:10.1105/tpc.4.8.879

Cited by 246 publications

(99 citation statements)

References 41 publications

(38 reference statements)

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“…In addition, pollen mother cells become separated from each other and from tapetum (Scott et a/. 1991, Bedinger 1992, Goldberg et a/. 1993, Bowman 1994.…”

Section: Discussionmentioning

confidence: 99%

Heat Shock Stress Causes Stage-specific Male Sterility in Arabidopsis thaliana

2001

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Although heat shock response in plants has been extensively studied, there has been little investigation into the effect of heat shock on plant organ development. When heat shock was applied to Arabidopsis during flower development, floral organs such as sepals, petals, stamens, and carpels developed normally. However, the development of pollen inside the anther was disrupted in a stage-specific manner, with floral stage 9 primordia failing to produce any pollen grains. Morphological analyses suggested that heat shock causes a failure of separation of pollen mother cells followed by microspore differentiation and/or inhibition of male meiotic processes. Heat shock also caused sterility in floral stage 12 flowers but the sterility was due to the failure of pollen release from the pollen sacs.

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“…In addition, pollen mother cells become separated from each other and from tapetum (Scott et a/. 1991, Bedinger 1992, Goldberg et a/. 1993, Bowman 1994.…”

Section: Discussionmentioning

confidence: 99%

Heat Shock Stress Causes Stage-specific Male Sterility in Arabidopsis thaliana

2001

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“…The TomA5B gene continues to be strongly expressed after free microspores are produced (flowers 9 mm in length). Once released, the microspores begin to grow rapidly and accumulate the outer pollen wall or exine [2]. TomA5B gene expression was not detected in flowers that were 10 mm in length prior to degeneration of the tapetum.…”

Section: Discussionmentioning

confidence: 99%

“…dissolution of the tetrads [9]; and production of precursors for the biosynthesis of the outer pollen wall [2,39]. These proposed functions suggest the tapetum is important to normal pollen development.…”

Section: Introductionmentioning

confidence: 99%

Molecular characterization of a gene encoding a cysteine-rich protein preferentially expressed in anthers of Lycopersicon esculentum

Aguirre

Smith

1993

Plant Mol Biol

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The tomato (Lycopersicon esculentum Mill.) cDNA clone TomA5B was isolated by differential screening of a cDNA library prepared from anthers at late meiosis to tetrad formation. The 5B gene is present in a single copy in the tomato genome. Expression is developmentally regulated and tissue specific. RNA accumulation was detected from premeiosis through tetrad release in the tapetal cell layer of the anther with low levels of RNA detected in petals and early stages of pistil development. The protein deduced from the DNA sequence analysis is predicted to have a molecular mass of 11.1 kDa and a secretory signal sequence, suggesting it is a secreted protein. The deduced 5B protein has a pattern of cysteine residues that is similar to other proteins that have stamen-specific expression and to a superfamily of seed proteins. The 5B protein is unique in that there is no amino acid sequence similarity to other proteins beyond the similar cysteine motif.

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“…The male and female gametophytes (the pollen grain/pollen tube and the embryo sac, respectively) develop within layers of protective and nutritive cells inside the anther (the male reproductive organ) and the pistil, respectively [7,14] (fig. 1).…”

Section: Plant Reproduction and The Ecmmentioning

confidence: 99%

Hydroxyproline-rich glycoproteins in plant reproductive tissues: structure, functions and regulation

Graaf

Mariani³

et al. 2001

CMLS, Cell. Mol. Life Sci.

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The plant reproductive process of pollination involves a series of interactions between the male gametophyte (the pollen grain or pollen tube) and extracellular matrix (ECM) molecules secreted by different cell types along the pollen tube growth pathway in the female organ, the pistil. These interactions are believed to signal and regulate the pollen tube growth process to effect successful delivery of the sperm cells to the ovules where fertilization takes place. Hydroxyproline-rich glycoproteins secreted by plant cells are believed to play a broad range of functions, ranging from providing structural integrity to mediating cell-cell interactions and communication. The pistil and pollen tube ECM is enriched in these highly glycosylated proteins. Our discussions here will focus on a number of these proteins for which most information has been available, from Nicotiana tabacum, its self-incompatible relative N. alata, and Zea mays. In addition, the regulation of the synthesis and glyco-modification of one of these proteins, TTS (transmitting tissue-specific) protein from N. tabacum will be discussed in the light of how differential glycosylation may be used to regulate molecular interactions within the ECM.

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The remarkable biology of pollen.

Cited by 246 publications

References 41 publications

Heat Shock Stress Causes Stage-specific Male Sterility in Arabidopsis thaliana

Heat Shock Stress Causes Stage-specific Male Sterility in Arabidopsis thaliana

Molecular characterization of a gene encoding a cysteine-rich protein preferentially expressed in anthers of Lycopersicon esculentum

Hydroxyproline-rich glycoproteins in plant reproductive tissues: structure, functions and regulation

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