Possible way to give Cavendish bananas resistance to TR4 fungi

PLOS ONE (2022). DOI: 10.1371 / journal.pone.0273335″ width=”800″ height=”343″/>

(AG): External and internal symptoms six weeks after individual vaccination with (A) Fusarium odoratissimum TR4, (B) F. oxysporum f. s. melongenae, (C) F. oxysporum and . s. cepae, (D) F. oxysporum and. s. lycopersici, (E) F. oxysporum f. s. gladioli, (F) F. oxysporum f. s. Cube R1 and (G) F. tardichlamydosporum R2. (HN): External and internal symptoms six weeks after the initial vaccination as follows (H) First vaccination with TR4 followed by challenge with R1 and (IN) first vaccination according to (BG) followed by challenge with TR4. attributed to him: PLUS ONE (2022). DOI: 10.1371 / journal.pone.0273335

A team of researchers from Wageningen University, working with colleagues from several institutions in Colombia, has found a possible way to confer TR4 resistance to Cavendish bananas. In their study published on the open access site PLUS ONEThe group exposed Cavendish banana plants to another fungus and found that doing so made them resistant to TR4.

Prior to the 1920s, most bananas available globally were from a variety called Gros Michel. But a strain of Fusarium mushroom It’s called TR1 started killing banana crops on farms. Bravely, plantation owners switched to another type of banana called Cavendish – it was immune to TR1 fungus, although it tasted less. Recently, another strain of Fusarium appeared – called TR4, and began to kill Cavendish bananas grown on modern farms. The fungus has been proven fatal, rendering many farms barren. It can also be moved easily, moving quickly from one Farm the next day. In response, scientists have been searching for an alternative type and treatment for Cavendish plants that protect them from TR4. In this new effort, the researchers considered the latter option.

Team members note that previous research has shown that some plants become temporarily immune to certain types of fungi when exposed to a different type of fungus — one they can naturally combat. In this case, they wondered if exposing Cavendish banana plants to TR1 would provide them protection against TR4.

To find out, they dug up some plant samples and dipped them in a solution containing TR1 mushrooms. After drying them, they exposed the plants at different time intervals to TR4 spores. They found that this approach worked – plants exposed to TR1 showed significant resistance to TR4 for up to 10 days.

The researchers were unable to explain why exposure made plants more resistant, noting that the plants They don’t have the kind of immune cells that remember pathogens — but they’re optimistic that improvements in their technique could be helpful in fighting TR4.

Prevalence of Panama disease in bananas caused by a single clone of Fusarium

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Cause Fernando A. PLUS ONE (2022). DOI: 10.1371 / journal.pone.0273335

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