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231224s2011 xx |||||o 00| ||eng c |
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|a 10.1093/jxb/err247
|2 doi
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|a pubmed24n1333.xml
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|a (DE-627)NLM210747757
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|a (NLM)21841173
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|a DE-627
|b ger
|c DE-627
|e rakwb
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| 041 |
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|a eng
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| 100 |
1 |
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|a Prins, Christine N
|e verfasserin
|4 aut
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| 245 |
1 |
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|a Effects of selenium accumulation on reproductive functions in Brassica juncea and Stanleya pinnata
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| 264 |
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|c 2011
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| 336 |
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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|a Date Completed 28.03.2012
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|a Date Revised 17.03.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a Selenium (Se) is an essential micronutrient for many organisms, but is also a toxin and environmental pollutant at elevated levels. Due to its chemical similarity to sulphur, most plants readily take up and assimilate Se. Se accumulators such as Brassica juncea can accumulate Se between 0.01% and 0.1% of dry weight (DW), and Se hyperaccumulators such as Stanleya pinnata (Brassicaeae) contain between 0.1% and 1.5% DW of Se. While Se accumulation offers the plant a variety of ecological benefits, particularly protection from herbivory, its potential costs are still unexplored. This study examines the effects of plant Se levels on reproductive functions. In B. juncea, Se concentrations >0.05-0.1% caused decreases in biomass, pollen germination, individual seed and total seed weight, number of seeds produced, and seed germination. In S. pinnata there was no negative effect of increased Se concentration on pollen germination. In cross-pollination of B. juncea plants with different Se levels, both the maternal and paternal Se level affected reproduction, but the maternal Se concentration had the most pronounced effect. Interestingly, high-Se maternal plants were most efficiently pollinated by Se-treated paternal plants. These data provide novel insights into the potential reproductive costs of Se accumulation, interactive effects of Se in pollen grains and in the pistil, and the apparent evolution of physiological tolerance mechanisms in hyperaccumulators to avoid reproductive repercussions
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|a Journal Article
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| 650 |
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|a Research Support, U.S. Gov't, Non-P.H.S.
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| 650 |
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|a Selenium
|2 NLM
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| 650 |
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|a H6241UJ22B
|2 NLM
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| 700 |
1 |
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|a Hantzis, Laura J
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Quinn, Colin F
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Pilon-Smits, Elizabeth A H
|e verfasserin
|4 aut
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| 773 |
0 |
8 |
|i Enthalten in
|t Journal of experimental botany
|d 1985
|g 62(2011), 15 vom: 17. Nov., Seite 5633-40
|w (DE-627)NLM098182706
|x 1460-2431
|7 nnns
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| 773 |
1 |
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|g volume:62
|g year:2011
|g number:15
|g day:17
|g month:11
|g pages:5633-40
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| 856 |
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|u http://dx.doi.org/10.1093/jxb/err247
|3 Volltext
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|d 62
|j 2011
|e 15
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|c 11
|h 5633-40
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