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231223s2008 xx ||||| 00| ||eng c |
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|e rakwb
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|a eng
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|a Sorce, Carlo
|e verfasserin
|4 aut
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|a The involvement of indole-3-acetic acid in the control of stem elongation in dark- and light-grown pea (Pisum sativum) seedlings
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|c 2008
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|a Text
|b txt
|2 rdacontent
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|a ohne Hilfsmittel zu benutzen
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|2 rdamedia
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|b nc
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|a Date Completed 21.07.2008
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|a Date Revised 09.01.2024
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|a published: Print-Electronic
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|a Citation Status MEDLINE
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|a We investigated the role of auxin on stem elongation in pea (Pisum sativum L.) grown for 10d in continuous darkness or under low-irradiance blue, red, far red and white light. The third internode of treated seedlings was peeled and the tissues (epidermis and cortex+central cylinder) were separately analyzed for the concentration of free and conjugated indole-3-acetic acid (IAA). Under red, far red and white light internode elongation was linearly related with the free IAA content of all internode tissues, suggesting that phytochrome-dependent inhibition of stem growth may be mediated by a decrease of free IAA levels in pea seedlings. The correlation between IAA and internode elongation, however, did not hold for blue light-grown seedlings. The hypothesis that the growth response under low-irradiance blue light might be correlated with the lack of phytochrome B signalling and changes in gibberellin metabolism is discussed in view of current knowledge on hormonal control of stem growth
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|a Journal Article
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|a Cryptochromes
|2 NLM
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|a Flavoproteins
|2 NLM
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|a Indoleacetic Acids
|2 NLM
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|a Phytochrome
|2 NLM
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|a 11121-56-5
|2 NLM
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|a indoleacetic acid
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|a Picciarelli, Piero
|e verfasserin
|4 aut
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|a Calistri, Gianni
|e verfasserin
|4 aut
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|a Lercari, Bartolomeo
|e verfasserin
|4 aut
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|a Ceccarelli, Nello
|e verfasserin
|4 aut
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| 773 |
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|i Enthalten in
|t Journal of plant physiology
|d 1979
|g 165(2008), 5 vom: 01., Seite 482-9
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|x 1618-1328
|7 nnns
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| 773 |
1 |
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|g volume:165
|g year:2008
|g number:5
|g day:01
|g pages:482-9
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