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Plant Signal Behav. 2012 Aug;7(8):994-8. doi: 10.4161/psb.20674. Epub 2012 Jul 25.

New insights into an old story: pollen ROS also play a role in hay fever.

Author information

  • 1Dipartimento di Biologia Evoluzionistica Sperimentale, Alma Mater Studiorum, Universit√† di Bologna, Bologna, Italy. anna.speranza@unibo.it

Abstract

Reactive oxygen species (ROS) can exhibit negative and benign traits. In plants, ROS levels increase markedly during periods of environmental stress, and defense against pathogen attack. ROS form naturally as a by-product of normal oxygen metabolism, and evenly play an essential role in cell growth. The short ROS lifespan makes them ideal molecules to act in cell signaling, a role they share in both plants and animals. A particular plant organism, the pollen grain, may closely interact with human mucosa and an allergic inflammatory response often results. Pollen grain ROS represent a first, crucial signal which primes and magnifies a cascade of events in the allergic response.

PMID:
22827950
[PubMed - indexed for MEDLINE]
PMCID:
PMC3474702
Free PMC Article
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