This article corrects:

  1. Genome size as a predictor of guard cell length in Arabidopsis thaliana is independent of environmental conditions Volume 181, Issue 2, 311–314, Article first published online: 27 November 2008

New Phytologist 181 (2009), 311–314.

Since its publication, the authors of Lomax et al. (2009) have brought to our attention that there is an error in their article where the levels of UV-B radiation are reported incorrectly. In the Materials and Methods, subsection UV-B radiation, the UV-B radiation should read 9.96 kJ m−2 d−1 (and not 26 kJ m−2 d−1). The correct section is printed below.

We apologize to our readers for this mistake.

UV-B radiation

Plants were germinated and stratified as above, transferred into growth cabinets (Model P61700H/FM/RO-HQI; Sanyo Gallenkamp) and grown under a day:night regime of 8 : 16 h at 21 : 15°C, 60% RH, and vapour pressure deficit (VPD) 0.995 kPa. UV-B light was supplied by a bank of nine Sanolux UV high-pressure lamps (323 1219; Phillips, Guildford, UK) which increased UV-B (measured at 300 nm) radiation to 9.96 kJ m−2 d−1 at plant height over the entire daylength; in the control cabinet all UV-B radiation was excluded and UV-A radiation was reduced using specific UV-B and UV-A cut-off wavelength filters (226 Lee U.V.; Lee Filters, Andover, UK). UV-B levels were measured using a Sola-Check System (Solatell Ltd, Croydon, UK), cross-calibrated with a Macam spectroradiometer (SR9000-V7; Macam Photometrics Ltd, Livingston, UK).