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PubMed · 10353575

How to write about pollen.

D A Frenz
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Abstract

BACKGROUND: Clinicians and palynologists (pollen specialists) often have different ways of expressing the same thing when they write about pollen. OBJECTIVE: This brief paper considers the confusing use of the word pollens that is frequently encountered in medical literature. METHODS: Three common uses for the word pollens are considered citing examples from clinical literature. The problems associated with each case are explored. RESULTS: Words and phrases that can serve as suitable alternatives to the word pollens are presented. The advantages of these alternatives are discussed. CONCLUSION: The word pollens represents a vague usage that obscures the author's intended meaning. Consistent application of the suggested alternatives will enhance the transmission of key concepts in the medical literature.

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BibTeXRIS

D A Frenz. 1999. How to write about pollen.. https://doi.org/10.1016/s1081-1206(10)62719-6

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Many flowering plants avoid inbreeding through a genetic mechanism termed self-incompatibility. An extremely polymorphic S-locus controls the gametophytic self-incompatibility system that causes pollen rejection (that is, active arrest of pollen tube growth inside the style) when an S-allele carried by haploid pollen matches one of the S-alleles present in the diploid style. The only known product of the S-locus is an S-RNase expressed in the mature style. The pollen component to this cell-cell recognition system is unknown and current models propose that it either acts as a gatekeeper allowing only its cognate S-RNase to enter the pollen tube, or as an inhibitor of non-cognate S-RNases. In the latter case, all S-RNases are presumed to enter pollen tubes; thus, the two models make diametrically opposed predictions concerning the entry of S-RNases into compatible pollen. Here we use immunocytochemical labelling of pollen tubes growing in styles to show accumulation of an S-RNase in the cytoplasm of all pollen-tube haplotypes, thus providing experimental support for the inhibitor model.

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