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.
journal_name
BMC Plant Bioljournal_title
BMC plant biologyauthors
Rodríguez VM,Soengas P,Alonso-Villaverde V,Sotelo T,Cartea ME,Velasco Pdoi
10.1186/s12870-015-0535-0subject
Has Abstractpub_date
2015-06-16 00:00:00pages
145issn
1471-2229pii
10.1186/s12870-015-0535-0journal_volume
15pub_type
杂志文章abstract:BACKGROUND:Plant-mediated RNAi (PMRi) silencing of insect genes has enormous potential for crop protection, but whether it works robustly under field conditions, particularly with lepidopteran pests, remains controversial. Wild tobacco Nicotiana attenuata and cultivated tobacco (N. tabacum) (Solanaceae) is attacked by ...
journal_title:BMC plant biology
pub_type: 杂志文章
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更新日期:2015-02-26 00:00:00
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更新日期:2020-05-12 00:00:00
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更新日期:2007-09-21 00:00:00
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