Carbon and nitrogen deposition in expanding tissue elements of perennial ryegrass (Lolium perenne L.) leaves during non‐steady growth after defoliation
ABSTRACT The effect of defoliation on the deposition of carbon (C) and nitrogen (N) and the contribution of reserves and current assimilates to the use of C and N in expanding leaf tissue of severely defoliated perennial ryegrass (Lolium perenne L.) was assessed with a new material element approach....
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| Veröffentlicht in: | Plant, cell and environment cell and environment, 2001-04, Vol.24 (4), p.407-417 |
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| creator | Schäufele, R. Schnyder, H. |
| description | ABSTRACT
The effect of defoliation on the deposition of carbon (C) and nitrogen (N) and the contribution of reserves and current assimilates to the use of C and N in expanding leaf tissue of severely defoliated perennial ryegrass (Lolium perenne L.) was assessed with a new material element approach. This included 13C/12C‐and 15N/14N‐steady‐state labelling of all post‐defoliation assimilated C and N, analysis of tissue expansion and displacement in the growth zone, and investigation of the spatial and temporal changes in substrate and label incorporation in the expanding elements prior to and after defoliation. The relationship between elemental expansion and C deposition was not altered by defoliation, but total C deposition in the growth zone was decreased due to decreased expansion of tissue at advanced developmental stages and a shortening of the growth zone. The N deposition per unit expansion was increased following defoliation, suggesting that N supply did not limit expansion. Transition from reserve‐ to current assimilation‐derived growth was rapid ( |
| doi_str_mv | 10.1046/j.1365-3040.2001.00689.x |
| format | Article |
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The effect of defoliation on the deposition of carbon (C) and nitrogen (N) and the contribution of reserves and current assimilates to the use of C and N in expanding leaf tissue of severely defoliated perennial ryegrass (Lolium perenne L.) was assessed with a new material element approach. This included 13C/12C‐and 15N/14N‐steady‐state labelling of all post‐defoliation assimilated C and N, analysis of tissue expansion and displacement in the growth zone, and investigation of the spatial and temporal changes in substrate and label incorporation in the expanding elements prior to and after defoliation. The relationship between elemental expansion and C deposition was not altered by defoliation, but total C deposition in the growth zone was decreased due to decreased expansion of tissue at advanced developmental stages and a shortening of the growth zone. The N deposition per unit expansion was increased following defoliation, suggesting that N supply did not limit expansion. Transition from reserve‐ to current assimilation‐derived growth was rapid (<1 d for carbohydrates and approximately 2 d for N), more rapid than suggested by label incorporation in growth zone biomass. The N deposition was highest near the leaf base, where cell division rates are greatest, whereas carbohydrate deposition was highest near the location of most active cell expansion. The contribution of reserve‐derived relative to current assimilation‐derived carbohydrates (or N) to deposition was very similar for elements at different stages of expansion</description><identifier>ISSN: 0140-7791</identifier><identifier>EISSN: 1365-3040</identifier><identifier>DOI: 10.1046/j.1365-3040.2001.00689.x</identifier><identifier>CODEN: PLCEDV</identifier><language>eng</language><publisher>Oxford, UK: Blackwell Science Ltd</publisher><subject>(leaf) growth zone ; 13N ; 15C ; Agronomy. Soil science and plant productions ; Biological and medical sciences ; Economic plant physiology ; Fundamental and applied biological sciences. Psychology ; Metabolism ; Net assimilation, photosynthesis, carbon metabolism. Photorespiration, respiration, fermentation (anoxia, hypoxia) ; Nutrition. Photosynthesis. Respiration. Metabolism ; Photosynthesis, respiration. Anabolism, catabolism ; Plant physiology and development ; reserves ; sink ; steady‐state labelling</subject><ispartof>Plant, cell and environment, 2001-04, Vol.24 (4), p.407-417</ispartof><rights>Blackwell Science Ltd</rights><rights>2001 INIST-CNRS</rights><rights>Copyright Blackwell Science Ltd. Apr 2001</rights><lds50>peer_reviewed</lds50><oa>free_for_read</oa><woscitedreferencessubscribed>false</woscitedreferencessubscribed><citedby>FETCH-LOGICAL-c4159-2827be38836630a9f19ee5b67fa3e04b0590e8c94076300e12c6d8dc0e307f243</citedby><cites>FETCH-LOGICAL-c4159-2827be38836630a9f19ee5b67fa3e04b0590e8c94076300e12c6d8dc0e307f243</cites></display><links><openurl>$$Topenurl_article</openurl><openurlfulltext>$$Topenurlfull_article</openurlfulltext><thumbnail>$$Tsyndetics_thumb_exl</thumbnail><linktopdf>$$Uhttps://onlinelibrary.wiley.com/doi/pdf/10.1046%2Fj.1365-3040.2001.00689.x$$EPDF$$P50$$Gwiley$$H</linktopdf><linktohtml>$$Uhttps://onlinelibrary.wiley.com/doi/full/10.1046%2Fj.1365-3040.2001.00689.x$$EHTML$$P50$$Gwiley$$H</linktohtml><link.rule.ids>314,780,784,1417,1433,27923,27924,45573,45574,46408,46832</link.rule.ids><backlink>$$Uhttp://pascal-francis.inist.fr/vibad/index.php?action=getRecordDetail&idt=930880$$DView record in Pascal Francis$$Hfree_for_read</backlink></links><search><creatorcontrib>Schäufele, R.</creatorcontrib><creatorcontrib>Schnyder, H.</creatorcontrib><title>Carbon and nitrogen deposition in expanding tissue elements of perennial ryegrass (Lolium perenne L.) leaves during non‐steady growth after defoliation</title><title>Plant, cell and environment</title><description>ABSTRACT
The effect of defoliation on the deposition of carbon (C) and nitrogen (N) and the contribution of reserves and current assimilates to the use of C and N in expanding leaf tissue of severely defoliated perennial ryegrass (Lolium perenne L.) was assessed with a new material element approach. This included 13C/12C‐and 15N/14N‐steady‐state labelling of all post‐defoliation assimilated C and N, analysis of tissue expansion and displacement in the growth zone, and investigation of the spatial and temporal changes in substrate and label incorporation in the expanding elements prior to and after defoliation. The relationship between elemental expansion and C deposition was not altered by defoliation, but total C deposition in the growth zone was decreased due to decreased expansion of tissue at advanced developmental stages and a shortening of the growth zone. The N deposition per unit expansion was increased following defoliation, suggesting that N supply did not limit expansion. Transition from reserve‐ to current assimilation‐derived growth was rapid (<1 d for carbohydrates and approximately 2 d for N), more rapid than suggested by label incorporation in growth zone biomass. The N deposition was highest near the leaf base, where cell division rates are greatest, whereas carbohydrate deposition was highest near the location of most active cell expansion. The contribution of reserve‐derived relative to current assimilation‐derived carbohydrates (or N) to deposition was very similar for elements at different stages of expansion</description><subject>(leaf) growth zone</subject><subject>13N</subject><subject>15C</subject><subject>Agronomy. Soil science and plant productions</subject><subject>Biological and medical sciences</subject><subject>Economic plant physiology</subject><subject>Fundamental and applied biological sciences. Psychology</subject><subject>Metabolism</subject><subject>Net assimilation, photosynthesis, carbon metabolism. Photorespiration, respiration, fermentation (anoxia, hypoxia)</subject><subject>Nutrition. Photosynthesis. Respiration. Metabolism</subject><subject>Photosynthesis, respiration. 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Soil science and plant productions</topic><topic>Biological and medical sciences</topic><topic>Economic plant physiology</topic><topic>Fundamental and applied biological sciences. Psychology</topic><topic>Metabolism</topic><topic>Net assimilation, photosynthesis, carbon metabolism. Photorespiration, respiration, fermentation (anoxia, hypoxia)</topic><topic>Nutrition. Photosynthesis. Respiration. Metabolism</topic><topic>Photosynthesis, respiration. Anabolism, catabolism</topic><topic>Plant physiology and development</topic><topic>reserves</topic><topic>sink</topic><topic>steady‐state labelling</topic><toplevel>peer_reviewed</toplevel><toplevel>online_resources</toplevel><creatorcontrib>Schäufele, R.</creatorcontrib><creatorcontrib>Schnyder, H.</creatorcontrib><collection>Pascal-Francis</collection><collection>CrossRef</collection><collection>Calcium & Calcified Tissue Abstracts</collection><collection>Environment Abstracts</collection><collection>Environmental Sciences and Pollution Management</collection><collection>Environment Abstracts</collection><jtitle>Plant, cell and environment</jtitle></facets><delivery><delcategory>Remote Search Resource</delcategory><fulltext>fulltext</fulltext></delivery><addata><au>Schäufele, R.</au><au>Schnyder, H.</au><format>journal</format><genre>article</genre><ristype>JOUR</ristype><atitle>Carbon and nitrogen deposition in expanding tissue elements of perennial ryegrass (Lolium perenne L.) leaves during non‐steady growth after defoliation</atitle><jtitle>Plant, cell and environment</jtitle><date>2001-04</date><risdate>2001</risdate><volume>24</volume><issue>4</issue><spage>407</spage><epage>417</epage><pages>407-417</pages><issn>0140-7791</issn><eissn>1365-3040</eissn><coden>PLCEDV</coden><abstract>ABSTRACT
The effect of defoliation on the deposition of carbon (C) and nitrogen (N) and the contribution of reserves and current assimilates to the use of C and N in expanding leaf tissue of severely defoliated perennial ryegrass (Lolium perenne L.) was assessed with a new material element approach. This included 13C/12C‐and 15N/14N‐steady‐state labelling of all post‐defoliation assimilated C and N, analysis of tissue expansion and displacement in the growth zone, and investigation of the spatial and temporal changes in substrate and label incorporation in the expanding elements prior to and after defoliation. The relationship between elemental expansion and C deposition was not altered by defoliation, but total C deposition in the growth zone was decreased due to decreased expansion of tissue at advanced developmental stages and a shortening of the growth zone. The N deposition per unit expansion was increased following defoliation, suggesting that N supply did not limit expansion. Transition from reserve‐ to current assimilation‐derived growth was rapid (<1 d for carbohydrates and approximately 2 d for N), more rapid than suggested by label incorporation in growth zone biomass. The N deposition was highest near the leaf base, where cell division rates are greatest, whereas carbohydrate deposition was highest near the location of most active cell expansion. The contribution of reserve‐derived relative to current assimilation‐derived carbohydrates (or N) to deposition was very similar for elements at different stages of expansion</abstract><cop>Oxford, UK</cop><pub>Blackwell Science Ltd</pub><doi>10.1046/j.1365-3040.2001.00689.x</doi><tpages>11</tpages><oa>free_for_read</oa></addata></record> |
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| subjects | (leaf) growth zone 13N 15C Agronomy. Soil science and plant productions Biological and medical sciences Economic plant physiology Fundamental and applied biological sciences. Psychology Metabolism Net assimilation, photosynthesis, carbon metabolism. Photorespiration, respiration, fermentation (anoxia, hypoxia) Nutrition. Photosynthesis. Respiration. Metabolism Photosynthesis, respiration. Anabolism, catabolism Plant physiology and development reserves sink steady‐state labelling |
| title | Carbon and nitrogen deposition in expanding tissue elements of perennial ryegrass (Lolium perenne L.) leaves during non‐steady growth after defoliation |
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