| |
DOI: | 10.1104/pp.56.3.438 |
Web URL(s): | http://www.plantphysiol.org/content/56/3/438.full.pdf+html Last checked: 08/09/12 Requires: PDF Reader Access conditions: Item is within a limited-access website |
Publication Type:
| Refereed |
Author(s): | Thomas, Howard;
Stoddard, John L. |
Author Affiliation: | Welsh Plant Breeding Station, Averystwyth, Dyfed, United Kingdom |
Title: | Separation of chlorophyll degradation from other senescence processes in leaves of a mutant genotype of meadow fescue (Festuca pratensis L.) |
Source: | Plant Physiology. Vol. 56, No. 3, September 1975, p. 438-441. |
# of Pages: | 4 |
Related Web URL: | http://www.plantphysiol.org/content/56/3/438.abstract Last checked: 08/09/12 Notes: Abstract only |
Keywords: | TIC Keywords: Festuca pratensis; Chlorophyll content; Mutants; Growth; Enzymes; Senescence; Chemical composition; Proteins; Abscisic acid; Kinetin
|
Geographic Terms: | UK |
Abstract/Contents: | "Chlorophyll levels in l-cm sections of the youngest fully expanded leaves of normal (Y) Festuca pratensis L. declined almost to zero over a period of 6 days after excision. Chlorophyll in a mutant genotype (NY) remained near the initial level for the whole of this period. Abscisic acid promoted pigment loss in Y but had no significant effect on chlorophyll in NY. Kinetin retarded pigment loss in Y but was ineffective in NY. Other biochemical changes associated with leaf senescencereduction in protein content and the appearance of novel isoenzymes of a-naphthyl acetate esterasesoccurred in both genotypes. Abscisic acid accelerated protein breakdown, whereas kinetin inhibited the loss of protein in both genotypes. The mutation thus appears to be expressed as a highly specific lesion in pigment metabolism. We concluded that pigment breakdown, which is widely used as an index of leaf senescence, may not be an inevitable part of the aging process." |
Language: | English |
References: | 15 |
Note: | Figures Tables Graphs |
| ASA/CSSA/SSSA Citation (Crop Science-Like - may be incomplete): Thomas, H., and J. L. Stoddard. 1975. Separation of chlorophyll degradation from other senescence processes in leaves of a mutant genotype of meadow fescue (Festuca pratensis L.). Plant Physiol. 56(3):p. 438-441. |
| Fastlink to access this record outside TGIF: https://tic.msu.edu/tgif/flink?recno=7369 |
| If there are problems with this record, send us feedback about record 7369. |
| Choices for finding the above item: |
| DOI: 10.1104/pp.56.3.438 |
| Web URL(s): http://www.plantphysiol.org/content/56/3/438.full.pdf+html Last checked: 08/09/12 Requires: PDF Reader Access conditions: Item is within a limited-access website |
| MSU catalog number: QK 1 .P68 |
| Find from within TIC: Digitally in TIC by record number. |
| Request through your local library's inter-library loan service (bring or send a copy of this TGIF record) |