Abstract：
:This study aimed to evaluate the behavior of zucchini (Cucurbita pepo L.) and cucumber (Cucumis sativus L.) under boron (B) excess. Plants were grown under greenhouse conditions in a sandy soil-peat mixture using a nutrient solution containing 0.2 (control), 10 and 20 mg L(-1) B. Visible symptoms were quantified and leaf B accumulation, gas exchanges, chlorophyll (Chl) a fluorescence, malondialdehyde by-products and antioxidants were investigated 20 days after the beginning of the treatments. Boron toxicity induced oxidative load and leaf necrotic burns coupled with the reduction of leaf growth and biomass accumulation in both species. Boron excess resulted in a decrease of Chl a/b ratio, potential (Fv/Fm) and actual (ΦPSII) PSII quantum efficiency, photosynthetic rate (Pn), stomatal conductance (gs), and transpiration (E) as well. A general stimulation of the antioxidant enzymes ascorbate peroxidase, catalase and superoxide dismutase was observed, and a significant increase in the oxidized form of ascorbate and glutathione was evidenced for treated plants of both species. A difference between the two species was observed: C. pepo appeared to be more sensitive to B stress being damaged at all B concentration. C. sativus grown at 10 mg L(-1) B in nutrient solution showed some down-regulated mechanisms, i.e. increase in Chl b content and a good photochemical PSII efficiency as well as a higher amount of constitutive antioxidant molecules, that, however, are not sufficient to contrast the negative effects of B.
journal_name
J Plant Resjournal_title
Journal of plant researchauthors
Landi M,Remorini D,Pardossi A,Guidi Ldoi
10.1007/s10265-013-0575-1subject
Has Abstractpub_date
2013-11-01 00:00:00pages
775-86issue
6eissn
0918-9440issn
1618-0860journal_volume
126pub_type
杂志文章abstract：:Intra- and transcellular water movements in plants are regulated by the water permeability of the plasma membrane (PM) and vacuolar membrane (VM) in plant cells. In the present study, we investigated the osmotic water permeability of both PM (P ( f1)) and VM (P ( f2)), as well as the bulk osmotic water permeability of...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0035-2
更新日期：2007-03-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
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更新日期：2010-11-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
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更新日期：2017-09-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
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更新日期：2005-10-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0846-8
更新日期：2016-09-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-002-0068-0
更新日期：2003-02-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-003-0130-6
更新日期：2004-02-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-008-0203-7
更新日期：2009-03-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
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更新日期：2012-07-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/s10265-018-1067-0
更新日期：2019-03-01 00:00:00
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pub_type： 杂志文章
doi：10.1007/s10265-019-01145-3
更新日期：2019-11-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-018-1053-6
更新日期：2018-11-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-004-0189-8
更新日期：2005-02-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-003-0121-7
更新日期：2004-02-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/BF02506839
更新日期：1997-03-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-018-1070-5
更新日期：2019-01-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-015-0764-1
更新日期：2016-01-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
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journal_title：Journal of plant research
pub_type： 杂志文章,评审
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journal_title：Journal of plant research
pub_type： 杂志文章,评审
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pub_type： 杂志文章
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pub_type： 杂志文章
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更新日期：2015-09-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0056-x
更新日期：2007-03-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0873-5
更新日期：2017-01-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-006-0018-3
更新日期：2006-11-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-002-0046-6
更新日期：2002-10-01 00:00:00
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journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-005-0200-z
更新日期：2005-04-01 00:00:00
abstract：:How phenotypic or genetic diversity is maintained in a natural habitat is a fundamental question in evolutionary biology. Flower color polymorphism in plants is a common polymorphism. Hepatica nobilis var. japonica on the Sea of Japan (SJ) side of the Japanese mainland exhibits within population flower color polymorph...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-016-0893-1
更新日期：2017-03-01 00:00:00
abstract：:Low doses of microtubule-interacting drugs cause wild-type Arabidopsis thaliana seedling roots to twist in a left-handed helical direction. We here report molecular characterization of an A. thaliana tubulin mutant whose roots twist in a right-handed direction and have shallow left-handed cortical microtubule arrays w...
journal_title：Journal of plant research
pub_type： 杂志文章
doi：10.1007/s10265-007-0105-0
更新日期：2007-09-01 00:00:00
