Knowledge Center Catalog

Phylogeny and systematics of 18 Colletotrichum species based on ribosomal DNA spacer sequences (Record no. 30170)

MARC details
000 -LEADER
fixed length control field 03186nab a22003497a 4500
001 - CONTROL NUMBER
control field G98201
003 - CONTROL NUMBER IDENTIFIER
control field MX-TxCIM
005 - DATE AND TIME OF LATEST TRANSACTION
control field 20190329170312.0
008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION
fixed length control field 121211b |||p||p||||||| |z||| |
022 0# - INTERNATIONAL STANDARD SERIAL NUMBER
International Standard Serial Number 0831-2796
040 ## - CATALOGING SOURCE
Original cataloging agency MX-TxCIM
041 0# - LANGUAGE CODE
Language code of text/sound track or separate title En
100 1# - MAIN ENTRY--PERSONAL NAME
Personal name Sreenivasaprasad, S.
245 00 - TITLE STATEMENT
Title Phylogeny and systematics of 18 Colletotrichum species based on ribosomal DNA spacer sequences
260 ## - PUBLICATION, DISTRIBUTION, ETC. (IMPRINT)
Date of publication, distribution, etc. 1996
500 ## - GENERAL NOTE
General note Peer-review: Yes - Open Access: Yes|http://science.thomsonreuters.com/cgi-bin/jrnlst/jlresults.cgi?PC=MASTER&ISSN=0831-2796
520 ## - SUMMARY, ETC.
Summary, etc. The potential use of the ribosomal DNA internal transcribed spacer (ITS) sequences in understanding the phylogeny and systematics of Colletotrichum species has been evaluated. Sequence data from a limited number of isolates revealed that in Colletotrichum species the ITS 1 region (50.3% variable sites) shows a greater degree of intra- and inter-specific divergence than ITS 2 (12.4% variable sites). Nucleotide sequences of the ITS 1 region from 93 isolates representing 18 Colletotrichum species were determined. Data for 71 of these isolates where molecular and morphological identities concurred were used for phylogenetic analysis. The size of the ITS 1 region varied from 159 to 185 base pairs. Maximum intraspecific divergence was recorded with C. acutatum (5.8%), and C. capsici showed the greatest level of interspecific divergence (8.9?23.3%). Parsimony and distance analyses gave similar tree topologies. The bootstrapped consensus parsimony tree divided the 18 Colletotrichum species into six phylogenetic groups, designated 1?6. These groups, however, are not congruent with species clusterings based on spore shape. For example, the straight cylindrical spored species were represented both in groups 1 and 6; group 6 also included the falcate fusiform spored speciesC. capsici. The molecular evidence suggests refinement of the species concepts of some of the taxa examined. In group 6, divergence between C. gloeosporioides and C. fuscum (0.6?3.0%) orC. kahawae (0.6?3.0%) or C. fragariae (0.6?4.2%) overlap the divergence (3.6%) within C.gloeosporioides. It is suggested that C. fuscum as well as C. kahawae and C. fragariae fall within the group species C. gloeosporioides. ITS 1 data enabled clear distinction (7.1%) ofColletotrichum isolates from maize and sorghum into C. graminicola and C. sublineolum, respectively (group 2). Species such as C. acutatum, C. coccodes, C. dematium, and C.trichellum can be clearly distinguished based on ITS 1 sequence divergence, but C.destructivum cannot be confidently separated (98% homology) from C. linicola. Colletotrichum dematium f. truncatum is distinct (12.9%) from C. dematium and should probably be called C.truncatum.
546 ## - LANGUAGE NOTE
Language note English
595 ## - COLLECTION
Collection Reprints Collection
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Colletotrichum species
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element ITS l
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
9 (RLIN) 1937
Topical term or geographic name as entry element Nucleotide sequence
Miscellaneous information AGROVOC
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element Phylogeny
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element rDNA
650 10 - SUBJECT ADDED ENTRY--TOPICAL TERM
Topical term or geographic name as entry element systematics
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Brown, A.E.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Meehan, B.M.,
Relator term coaut.
700 1# - ADDED ENTRY--PERSONAL NAME
Personal name Mills, P.R.,
Relator term coaut.
773 0# - HOST ITEM ENTRY
Title Genome
Related parts v. 39, no. 3, p. 499-512
942 ## - ADDED ENTRY ELEMENTS (KOHA)
Koha item type Article
Holdings
Date last seen Total Checkouts Price effective from Koha item type Lost status Damaged status Not for loan Collection code Withdrawn status Home library Current library Date acquired
07/03/2017   07/03/2017 Article Not Lost     Reprints Collection   CIMMYT Knowledge Center: John Woolston Library CIMMYT Knowledge Center: John Woolston Library 07/03/2017

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