Tetraploid intergeneric hybrid carp 4nAK
Ontology highlight
ABSTRACT:
PROVIDER: PRJNA698702 | ENA |
REPOSITORIES: ENA
Dataset's files
| Action | DRS | |||
|---|---|---|---|---|
| SRR10605323_subreads.fastq.gz | Fastqsanger.gz | |||
| SRR10605339_1.fastq.gz | Fastqsanger.gz | |||
| SRR10605339_2.fastq.gz | Fastqsanger.gz |
Items per page: 5 1 - 3 of 3 |
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Project description:tetraploid intergeneric hybrid carp 4nAK strain:1 Raw sequence reads
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Project description:We applied high throughput sequencing technology to identify microRNA genes in bighead carp and silver carp. We identified 167 conserved miRNAs in bighead carp and 166 in silver carp. By two computational stragegies, we obtained 39 novel miRNAs in bighead carp and 54 in silver carp, for which, no homologs were found in other species. Several miRNA* sequences were found in our dataset as well, some particular ones might have gene regulation function. Gain and loss of family members were observed in several miRNA families, which partially reflected the fate of miRNA gene duplicates. Total RNA of juvenile bighead carp and silver carp were sequenced on one Solexa lane, respectively.
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Project description:Hybrid chlorosis, one of the hybrid incompatibilities, has frequently been reported in inter- and intraspecific crosses of allopolyploid wheat. In our previous study, hybrid chlorosis was observed in the wheat triploids between a tetraploid wheat cultivar Langdon and four Ae. tauschii accessions and in their derived synthetic hexaploids. However, the molecular mechanisms underlying hybrid chlorosis are not well understood. Here, we performed cytological and comparative gene expression analyses in leaves to characterize the abnormal growth in wheat synthetics showing mild and severe chlorosis symptom. In addition, disease resistance was comparatively assessed. A number of carbohydrate metabolism- and defense-related genes were markedly up-regulated in the hybrid chlorosis lines, and abnormal chloroplasts were formed in the mesophyll cells before the leaves turned to be yellowish. The mild chlorosis plants showed increased resistance to a wheat blast fungus, although little significant differences of agricultural traits were found between the wild-type and mild chlorosis-showing plants. These observations suggest that the senescence processes might be accelerated in the hybrid chlorosis lines of wheat synthetics. Moreover, the negative effects on biomass can be minimized and the substantial fitness may be obtained under pathogen-polluted conditions in the mild chlorosis-showing wheat synthetics.
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Project description:Hybrid chlorosis, one of the hybrid incompatibilities, has frequently been reported in inter- and intraspecific crosses of allopolyploid wheat. In our previous study, hybrid chlorosis was observed in the wheat triploids between a tetraploid wheat cultivar Langdon and four Ae. tauschii accessions and in their derived synthetic hexaploids. However, the molecular mechanisms underlying hybrid chlorosis are not well understood. Here, we performed cytological and comparative gene expression analyses in leaves to characterize the abnormal growth in wheat synthetics showing mild and severe chlorosis symptom. In addition, disease resistance was comparatively assessed. A number of carbohydrate metabolism- and defense-related genes were markedly up-regulated in the hybrid chlorosis lines, and abnormal chloroplasts were formed in the mesophyll cells before the leaves turned to be yellowish. The mild chlorosis plants showed increased resistance to a wheat blast fungus, although little significant differences of agricultural traits were found between the wild-type and mild chlorosis-showing plants. These observations suggest that the senescence processes might be accelerated in the hybrid chlorosis lines of wheat synthetics. Moreover, the negative effects on biomass can be minimized and the substantial fitness may be obtained under pathogen-polluted conditions in the mild chlorosis-showing wheat synthetics. Expression patterns were compared between a wild-type synthetic wheat line (as a reference) and two hybrid chlorosis-showing hybrid chlorosis lines. Total RNA samples were isolated from the 3-week-old leaf tissues. Two independent experiments were conducted in each line.
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