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Effect of temperature stress on the early vegetative development of Brassica oleracea L. | LitMetric

Effect of temperature stress on the early vegetative development of Brassica oleracea L.

BMC Plant Biol

Group of Genetics, Breeding and Biochemistry of Brassicas. Misión Biológica de Galicia (MBG-CSIC), Apartado 28, 36080, Pontevedra, Spain.

Published: June 2015

AI Article Synopsis

  • Brassica oleracea, which includes cabbage and kale, is affected by temperature changes during its biennial life cycle, impacting its growth and fitness.
  • The study found that both low and high temperatures affect plant performance, but low temperatures have a more significant negative impact on photosynthesis, fresh weight, and leaf characteristics.
  • Cabbage (capitata group) showed more resilience to temperature changes compared to kale (acephala group), indicating that different populations exhibit varying sensitivities to thermal stress.

Article Abstract

Background: Due to its biennual life cycle Brassica oleracea is especially exposed to seasonal changes in temperature that could limit its growth and fitness. Thermal stress could limit plant growth, leaf development and photosynthesis. We evaluated the performance of two local populations of B. oleracea: one population of cabbage (B. oleracea capitata group) and one population of kale (B. oleracea acephala group) under limiting low and high temperatures.

Results: There were differences between crops and how they responded to high and low temperature stress. Low temperatures especially affect photosynthesis and fresh weight. Stomatal conductance and the leaf water content were dramatically reduced and plants produce smaller and thicker leaves. Under high temperatures there was a reduction of the weight that could be associated to a general impairment of the photosynthetic activity.

Conclusions: Although high temperatures significantly reduced the dry weight of seedlings, in general terms, low temperature had a higher impact in B. oleracea physiology than high temperature. Interestingly, our results suggest that the capitata population is less sensitive to changes in air temperature than the acephala population.

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Source
http://www.ncbi.nlm.nih.gov/pmc/articles/PMC4467057PMC
http://dx.doi.org/10.1186/s12870-015-0535-0DOI Listing

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