Characterization, expression and evolution of two novel subfamilies of<i>Pinus monticola</i>cDNAs encoding pathogenesis-related (PR)-10 proteins
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Bibliographic record
Abstract
Proteins of the pathogenesis-related (PR)-10 family are induced in many plants by phytopathogens and environmental stresses. A multi-gene family of PR10 proteins has previously been found in the genome of western white pine (Pinus monticola Dougl. ex D. Don). We isolated two novel subfamilies of PR10 cDNAs (PmPR10-2 and PmPR10-3) from P. monticola that are distinct from other PR10 genes (PmPR10-1.1-1.14) reported from the same species. The PmPR10 proteins are grouped in three subfamilies based on similarity in amino acid sequences. The sequence identities of PmPR10 proteins are much higher among members within a subfamily than among members of different subfamilies (86-99% versus 59-68%). Induction of both PmPR10-2 and PmPR10-3 mRNAs was detected by reverse transcriptase-polymerase chain reaction (RT-PCR) in needles in response to wounding treatment. PmPR10-3 was also expressed in needles during cold acclimation in winter. Transcript levels of both PmPR10-2 and PmPR10-3 were less than the detectable levels of constitutive expression in roots, stems and vegetative shoots, whereas PmPR10-1.10 mRNA of subfamily I was expressed at various levels. Phylogenetic analysis showed that PmPR10 and PR10 proteins from other conifers are grouped within one clade that is distinct from that of angiosperm PR10 proteins. In the conifer monophyletic group, PR10 sequences diversify into three distinct clusters. Among these three clusters, some PR10 proteins from single conifer species showed greater divergence distances than sequences from other conifer species, suggesting that, within the conifers, the multi-gene family underwent great diversification during evolution. Based on ratios of nonsynonymous to synonymous nucleotide substitutions (Ka/Ks), we speculate that positive selection resulted in the divergence of PmPR10 subfamilies I and III. Possible mechanisms and significance of PR10 gene evolution are discussed.
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Full frame distilled prediction
Teacher imitationNot calibrated prevalence, not ground truth. Human validation pending. Learned from the 10,348 direct Codex labels and 10,348 direct Gemma labels. Candidate is the union of thresholded teacher heads; consensus is their intersection. These outputs are machine_predicted_unvalidated and are not human labels or direct frontier model labels.
Codex and Gemma teacher scores by category
| Category | Codex | Gemma |
|---|---|---|
| Metaresearch | 0.000 | 0.000 |
| Meta-epidemiology (narrow) | 0.000 | 0.000 |
| Meta-epidemiology (broad) | 0.000 | 0.000 |
| Bibliometrics | 0.000 | 0.000 |
| Science and technology studies | 0.000 | 0.000 |
| Scholarly communication | 0.000 | 0.000 |
| Open science | 0.000 | 0.000 |
| Research integrity | 0.000 | 0.000 |
| Insufficient payload (model declined to judge) | 0.000 | 0.000 |
Machine scores (provisional)
The two teacher heads of the student model, read on this work. A score orders the frame for review; it never asserts a category, and the validation status ships verbatim with every row.
Baseline scores from an immature model (maturity gate not passed, 7 training rounds). Scores rank; they never assert a category.
score_only:v0-immature-baseline · verbatim from the scoring run: score_only means the number may rank works, and no category label ships from it