Post in evidenza

Arctic permafrost thawing faster than ever

Permafrost in the Arctic is thawing faster than ever, according to a new US government report that also found  Arctic   seawater is war...


giovedì 18 agosto 2016

Bananas May Become Extinct In 5 Years

Although the banana is a common fruit, it is currently under threat from pesticides, say experts.

The banana has been a common fruit in most parts of the world, but it is currently facing a major threat from Sigatoka complex, which can wipe out the species from the universe in the next five to 10 years, according to University of California plant pathologist Ioannis Stergiopoulos.
There are three fungal diseases that make up the Sigatoka complex. The black one is the biggest threat to the 100 million tonnes that are produced annually in almost 120 countries. Two more diseases include eumusae leaf spot and yellow Sigatoka.
Experts discovered that the fungal diseases shut off the immune systems, while the fungal metabolism adapted itself to match the host plants. Hence, the fungi could produce enzymes breaking down the cell walls of the plant, so that it could feed on carbohydrates and sugar.
Stergiopoulos analysed the fungal attack when he sequenced the genomes of black Sigatoka and eumusae leaf spot, and then compared the results with the earlier sequenced yellow Sigatoka genome.
"We have demonstrated that two of the three most serious banana fungal diseases have become more virulent by increasing their ability to manipulate the banana's metabolic pathways and make use of its nutrients," Stergiopoulos told Digg.
The changes in the host's metabolism as well as the pathogen are probably like a "molecular fingerprint" of the adaptation process, but it has not been studied much. Stergiopoulos feels that this aspect needs to be looked into further.
The banana plant is thought to be widespread in the world, but it is under threat due to fungal disease. It is important that farmers make 50 fungicide applications available annually.
"Thirty to 35 percent of banana production cost is in fungicide applications. Because many farmers can't afford the fungicide, they grow bananas of lesser quality, which bring them less income," Stergiopoulos added.
The research was published in PLOS Genetics.

Bananas May Become Extinct In 5 Years R. Siva Kumar | Aug 17, 2016

The Latest Bananas 6 DICEMBRE 2015

The Land Grabbers i Predoni della Terra


July 2016 The Hottest Month Ever Recorded 18 AGOSTO 2016

Extreme Weather Milestones 13 AGOSTO 2016

Complete Ecosystem Collapse 25 LUGLIO 2016

Humans' Over-Exploitation Causes Mass Extinction 13 AGOSTO 2016

Climate Change Inferno 27 LUGLIO 2016

Climate Change Inferno: 2,50,000 more deaths per year 15 LUGLIO 2016

Terrifying rise in air pollution 10 GIUGNO 2016


Anthropogenic-induced climate changes 8 SETTEMBRE 2015

Hottest June on record: 14-month global heat wave 25 LUGLIO 2016

Highest carbon dioxide levels in 4 million years 19 GIUGNO 2016

Beyond the "Safe Limit" 15 LUGLIO 2016

AGE OF EXTINCTION August 10, 2015

Racing against Extinction 28 NOVEMBRE 2015


Call of Life: Facing the Mass Extinction 27 LUGLIO 2016

Ti piace?

Nessun commento:

Posta un commento

Related Posts Plugin for WordPress, Blogger...