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231223s2009 xx |||||o 00| ||eng c |
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|a 10.1016/j.plaphy.2008.10.004
|2 doi
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|a pubmed24n0616.xml
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|a (DE-627)NLM184750083
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|a (NLM)19036596
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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 Abbes, Zouhaier
|e verfasserin
|4 aut
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| 245 |
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|a Nitrogen and carbon relationships between the parasitic weed Orobanche foetida and susceptible and tolerant faba bean lines
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|c 2009
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|a Text
|b txt
|2 rdacontent
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|a ƒaComputermedien
|b c
|2 rdamedia
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| 338 |
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|a ƒa Online-Ressource
|b cr
|2 rdacarrier
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| 500 |
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|a Date Completed 28.04.2009
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|a Date Revised 30.09.2020
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|a published: Print-Electronic
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|a CommentIn: Plant Signal Behav. 2009 Apr;4(4):336-8. - PMID 19794856
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|a Citation Status MEDLINE
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|a The parasitic weed Orobanche foetida (Poiret) is an emergent agronomical problem on faba bean in Tunisia. The Tunisian breeding programs for faba bean resistance to O. foetida have produced several tolerant lines including the line XBJ90.03-16-1-1-1, which limits both parasite attachments to the host roots and growth of the attached parasites. The present study aims to provide a better understanding of the nutritional relationships between the parasite and this tolerant line in comparison with the susceptible Bachaar genotype. Phloem saps of faba bean were harvested using phloem exudation experiments. The major organic compounds potentially transferred from both faba bean genotypes to the parasite were identified as sucrose, raffinose, stachyose, citrate, malate, asparagine (ASN), aspartate (ASP), glutamine, glutamate, serine, alanine and GABA. However, the phloem exudates of the tolerant line were highly deficient in nitrogen when compared to that of the susceptible line. When attached to roots of the tolerant line, the parasite displayed limited activities of soluble invertases in tubercles, and especially in shoots, suggesting that the low performance of the broomrapes attached to the tolerant line resulted from a reduced capacity to utilize the host-derived carbohydrates. On the other hand, the mechanisms involved in the osmotic adjustment and primary metabolism of the parasite did not differ significantly according to the host genotype: mineral cations, especially potassium and calcium, predominated as the major osmotically-active compounds in both tubercles and shoots; shoots accumulated preferentially hexoses as organic solutes although tubercles accumulated preferentially starch and soluble amino acids, especially ASP and ASN. This suggests an important role for a glutamine-dependent asparagine synthetase (EC 6.3.5.4) in the N metabolism of the parasite
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|a Journal Article
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|a Research Support, Non-U.S. Gov't
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|a Amino Acids
|2 NLM
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|a Minerals
|2 NLM
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| 650 |
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|a Plant Proteins
|2 NLM
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| 650 |
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|a Starch
|2 NLM
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| 650 |
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|a 9005-25-8
|2 NLM
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| 650 |
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|a beta-Fructofuranosidase
|2 NLM
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| 650 |
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|a EC 3.2.1.26
|2 NLM
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| 650 |
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|a Aspartate-Ammonia Ligase
|2 NLM
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| 650 |
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|a EC 6.3.1.1
|2 NLM
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| 700 |
1 |
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|a Kharrat, Mohamed
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Delavault, Philippe
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Chaïbi, Wided
|e verfasserin
|4 aut
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| 700 |
1 |
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|a Simier, Philippe
|e verfasserin
|4 aut
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| 773 |
0 |
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|i Enthalten in
|t Plant physiology and biochemistry : PPB
|d 1991
|g 47(2009), 2 vom: 15. Feb., Seite 153-9
|w (DE-627)NLM098178261
|x 1873-2690
|7 nnns
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| 773 |
1 |
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|g volume:47
|g year:2009
|g number:2
|g day:15
|g month:02
|g pages:153-9
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| 856 |
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|u http://dx.doi.org/10.1016/j.plaphy.2008.10.004
|3 Volltext
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|d 47
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