AI Article Synopsis
- Agave (var. azul) has low genetic diversity due to centuries of vegetative propagation, making it vulnerable to pests and diseases.
- The study analyzed field-grown agave plants with different resistance levels to agave wilt, and confirmed significant genetic differences among them, although these did not match the phenotypic resistance observed.
- The research found that potentially resistant plantlets exhibited higher early levels of certain biochemical compounds, which were linked to better defense against the pathogen affecting diseased root cells over time.
Article Abstract
Agave ( var. azul) is considered a crop with low genetic diversity because it has been propagated vegetatively for centuries for commercial purposes, and consequently, it could be equally susceptible to pests and diseases. However, the present study employs plant material derived from field-grown plants exhibiting phenotypic variability in susceptibility to agave wilt. The offshoots from rhizomes of these plants were reproduced and classified as potentially resistant or susceptible. Amplified fragment length polymorphism analysis confirmed wide genetic differences among individuals, but these differences were not correlated with the observed phenotypic variability in resistance. Propagated plantlets were inoculated with in two time-lapse confrontations for 72 h and 30 days. The early biochemical response showed statistically superior levels in the accumulation of shikimic acid, phenolic compounds, and chitinase activity in potentially resistant plantlets. There was an inverse correlation of these early biochemical responses and salicylic acid and the incidence of diseased root cells in isogenic plantlets in the 30-day confrontation with , suggesting that these activities and accumulation of molecules were primordial in the defence against this pathogen.
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| http://www.ncbi.nlm.nih.gov/pmc/articles/PMC9246091 | PMC |
| http://dx.doi.org/10.1093/aobpla/plac027 | DOI Listing |
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