Suppression of host photosynthesis by the parasitic plant Rhinanthus minor.

Annals of Botany
Duncan D CameronLouis J Irving

Abstract

Parasitism is well understood to have wide-ranging deleterious effects on host performance in species thus far characterized. Photosynthetic performance reductions have been noted in the Striga-Zea mays association; however, no such information exists for facultative hemiparasitic plants and their hosts, nor are the effects of host species understood. Chlorophyll fluorimetry was used to study the effects of parasitism by the hemiparasite Rhinanthus minor on the grass Phleum bertolinii and the forb Plantago lanceolata, and the effects of host species on the photosynthetic apparatus of R. minor. Parasitism by Rhinanthus led to a significant decrease in the host, and total (host + parasite) biomass in Phleum; however, in Plantago, no significant repression of growth was noted. Maximum quantum yield (F(v)/F(m)) was reduced in parasitized Plantago, relative to control plants, but not in Phleum. F(v)/F(m) was significantly lower in R. minor parasitizing Phleum than Plantago, suggesting Phleum to be a superior host to Plantago for R. minor. Steady-state quantum yield (Phi(PSII)) was significantly depressed in parasitized Phleum, but only at low irradiances in Plantago. Phi(PSII) was very low for R. minor grown on Plantago, but not Phl...Continue Reading

References

Aug 12, 2000·Journal of Experimental Botany·K Maxwell, G N Johnson
Apr 18, 2002·Journal of Agricultural and Food Chemistry·Yoshifumi Tamura, Sansei Nishibe
Jan 18, 2006·The New Phytologist·Louis John Irving, David Robinson
Jun 9, 2006·Plant Physiology·Philip M MullineauxNeil R Baker
Jan 9, 2007·Biochimica Et Biophysica Acta·Norio MurataSuleyman I Allakhverdiev
Mar 1, 1989·Oecologia·C C Gibson, A R Watkinson

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Citations

Feb 3, 2016·Annals of Botany·Robert Michael CiroccoJennifer Robyn Watling
May 10, 2015·Journal of Plant Research·Xiao-Lin SuiAi-Rong Li
Jan 30, 2013·The New Phytologist·James P FisherDuncan D Cameron
Oct 18, 2019·Frontiers in Plant Science·María Luisa Pérez-BuenoMatilde Barón
Aug 24, 2010·Plant Signaling & Behavior·Jakub TěšitelDuncan D Cameron
Feb 23, 2020·Microbial Ecology·Gensheng BaoChunjie Li

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