Wheat Leaf Photosynthesis Loss Due to Leaf Rust, with Respect to Lesion Development and Leaf Nitrogen Status

• In wheat (Triticum aestivum cv. Soissons) plants grown under three different fertilisation treatments, we quantified the effect of leaf rust (Puccinia triticina) on flag leaf photosynthesis during the whole sporulation period. • Bastiaans' model: Y = (1-x)<sup>β</sup> was used to...

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Bibliographische Detailangaben
Veröffentlicht in:	New Phytologist. - New Phytologist Trust. - 165(2005), 1, Seite 227-241
1. Verfasser:	Robert, Corinne (VerfasserIn)
Weitere Verfasser:	Bancal, Marie-Odile, Ney, Bertrand, Lannou, Christian
Format:	Online-Aufsatz
Sprache:	English
Veröffentlicht:	2005
Zugriff auf das übergeordnete Werk:	New Phytologist
Schlagworte:	Leaf rust (Puccinia triticina) Leaf photosynthesis Lesion development Leaf nitrogen (N) Damages Modelling Quantitative analysis Health sciences Biological sciences Physical sciences


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245	1	0	\|a Wheat Leaf Photosynthesis Loss Due to Leaf Rust, with Respect to Lesion Development and Leaf Nitrogen Status
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520			\|a • In wheat (Triticum aestivum cv. Soissons) plants grown under three different fertilisation treatments, we quantified the effect of leaf rust (Puccinia triticina) on flag leaf photosynthesis during the whole sporulation period. • Bastiaans' model: Y = (1-x)<sup>β</sup> was used to characterize the relationship between relative leaf photosynthesis (Y) and disease severity (x). The evolution of the different types of symptoms induced by the pathogen (sporulating, chlorotic and necrosed tissues) was evaluated using image analysis. • The β-values varied from 2 to 11, 1.4-2, and 0.8-1 during the sporulation period, when considering the proportion of sporulating, sporulating + necrotic, and total diseased area, respectively. Leaf nitrogen (N) content did not change the effect of the disease on host photosynthesis. • We concluded that leaf rust has no global effect on the photosynthesis of the symptomless parts of the leaves and that the large range in the quantification of leaf rust effect on the host, which is found in the literature, can be accounted for by considering the different symptom types. We discuss how our results could improve disease assessments and damage prediction in a wheat crop.
540			\|a Copyright 2004 New Phytologist
650		4	\|a Leaf rust (Puccinia triticina)
650		4	\|a Leaf photosynthesis
650		4	\|a Lesion development
650		4	\|a Leaf nitrogen (N)
650		4	\|a Damages
650		4	\|a Modelling
650		4	\|a Quantitative analysis
650		4	\|a Health sciences \|x Medical conditions \|x Physical trauma \|x Lesions
650		4	\|a Biological sciences \|x Biology \|x Mycology \|x Fungi \|x Rust fungi
650		4	\|a Biological sciences \|x Biochemistry \|x Metabolism \|x Autotrophic processes \|x Photosynthesis
650		4	\|a Health sciences \|x Medical sciences \|x Medical research \|x Biomedical research \|x Disease models
650		4	\|a Biological sciences \|x Biology \|x Developmental biology \|x Reproduction \|x Sporulation
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plant morphology \|x Plant vegetation \|x Leaves
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Phytopathology \|x Plant diseases
650		4	\|a Biological sciences \|x Biology \|x Botany \|x Plants
650		4	\|a Physical sciences \|x Chemistry \|x Chemical elements \|x Nitrogen
650		4	\|a Health sciences \|x Health and wellness \|x Public health \|x Epidemiology
655		4	\|a research-article
700	1		\|a Bancal, Marie-Odile \|e verfasserin \|4 aut
700	1		\|a Ney, Bertrand \|e verfasserin \|4 aut
700	1		\|a Lannou, Christian \|e verfasserin \|4 aut
773	0	8	\|i Enthalten in \|t New Phytologist \|d New Phytologist Trust \|g 165(2005), 1, Seite 227-241 \|w (DE-627)268132674 \|w (DE-600)1472194-6 \|x 14698137 \|7 nnns
773	1	8	\|g volume:165 \|g year:2005 \|g number:1 \|g pages:227-241
856	4	0	\|u https://www.jstor.org/stable/1514601 \|3 Volltext
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952			\|d 165 \|j 2005 \|e 1 \|h 227-241