MARC details
| 000 -LEADER |
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| fixed length control field |
02898nam a2200289Ia 4500 |
| 003 - CONTROL NUMBER IDENTIFIER |
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| control field |
MX-MdCICY |
| 005 - DATE AND TIME OF LATEST TRANSACTION |
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| control field |
20250625122510.0 |
| 040 ## - CATALOGING SOURCE |
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| Transcribing agency |
CICY |
| 090 ## - LOCALLY ASSIGNED LC-TYPE CALL NUMBER (OCLC); LOCAL CALL NUMBER (RLIN) |
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| Classification number (OCLC) (R) ; Classification number, CALL (RLIN) (NR) |
B-6054 |
| 008 - FIXED-LENGTH DATA ELEMENTS--GENERAL INFORMATION |
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| fixed length control field |
250602s9999 xx |||||s2 |||| ||und|d |
| 245 10 - TITLE STATEMENT |
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| Title |
Mode of resistance to respiration inhibitors at the cytochrome bc1 enzyme complex of Mycosphaerella fijiensis field isolates |
| 490 0# - SERIES STATEMENT |
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| Volume/sequential designation |
Pest Management Science, 56(10), p.833-841, 2000 |
| 520 3# - SUMMARY, ETC. |
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| Summary, etc. |
Field isolates of Mycosphaerella fijiensis, causing black Sigatoka of banana, were characterised for their sensitivity to different inhibitors of the cytochrome bc1 enzyme complex (Qo respiration inhibitors, strobilurin fungicides), using physiological, biochemical and molecular genetic methods. Strobilurin-resistant isolates exhibited very high resistance factors both in mycelial growth inhibition and NADH consumption assays. Cross-resistance was observed among all Qo inhibitors, including trifloxystrobin, azoxystrobin, famoxadone, strobilurin B and myxothiazol. However, the Qi and the cytochrome aa3 inhibitors, antimycin A and potassium cyanide, respectively, were not cross-resistant to Qo inhibitors. In sensitive but not in resistant isolates, mixtures of Qo inhibitors and SHAM, an inhibitor of the alternative oxidase (AOX), were more active than the components alone, indicating that the alternative pathway is essential in metabolism, but not causal for resistance. In the cell-free NADH-consumption assay, the Qo inhibitors affected the sensitive but not the resistant isolates, suggesting that AOX was not active in sub-mitochondrial particles. In whole cells, however, the AOX has a basic expression level and is probably not inducible by trifloxystrobin. Sequencing of the cytochrome b gene of sensitive and resistant M fijiensis isolates revealed a difference in the nucleotide sequence leading to a single amino acid change from glycine to alanine at position 143 in the resistant isolate. This change is known to occur also in the naturally tolerant basidiomycete Mycena galopoda. It is suggested that the field isolates of M fijiensis can acquire resistance to Qo inhibitors due to a target site alteration with a single base pair change. Resistant isolates do not seem to contain a mixture of mutated and non-mutated DNA, indicating a complete selection of resistant mitochondria and a maternally donated mode of resistance. |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
STROBILURINS |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
RESISTANCE |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
CYTOCHROME B |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
ALTERNATIVE OXIDASE |
| 650 14 - SUBJECT ADDED ENTRY--TOPICAL TERM |
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| Topical term or geographic name entry element |
MYCOSPHAERELLA FIJIENSIS |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Sierotzki, H. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Parisi, S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Steinfeld, U. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Tenzer, I. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Poirey, S. |
| 700 12 - ADDED ENTRY--PERSONAL NAME |
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| Personal name |
Gisi, U. |
| 856 40 - ELECTRONIC LOCATION AND ACCESS |
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| Uniform Resource Identifier |
<a href="https://drive.google.com/file/d/1pDskvXmjApRodckZqffcDx4Vg9ZmmI9L/view?usp=drivesdk">https://drive.google.com/file/d/1pDskvXmjApRodckZqffcDx4Vg9ZmmI9L/view?usp=drivesdk</a> |
| Public note |
Para ver el documento ingresa a Google con tu cuenta: @cicy.edu.mx |
| 942 ## - ADDED ENTRY ELEMENTS (KOHA) |
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| Source of classification or shelving scheme |
Clasificación local |
| Koha item type |
Documentos solicitados |
