Job offersmore »
- Growing Manager - Skye, Victoria
- Assistant Professor of Urban Horticultural Crops - United States (CA)
- Senior Inkoper - Maasdijk, Nederland
- Product Manager Biostimulants - Westmaas, the Netherlands
- Corporate Grower - Camarillo (CA), USA
- General Manager China - Kunming, China
- Buyer greenhouse crops - Almeria, Spain
- Trucking Fleet Manager - Azerbaijan
- Fresh Produce Traders Required for a Leading Dutch/UK Fresh Produce Business
- Key Accountmanager Horticulture Glass
Top 5 - yesterday
- No news was published yesterday.
Top 5 - last week
Top 5 - last month
Exchange ratesmore »
Scientists identify hundreds of rocket genes with an unknown function
Wild rocket (Diplotaxis tenuifolia L.) has a great value in the fresh-cut industry thanks to its nutritional and sensory properties. Nonetheless, the molecular mechanisms that confer harvested leaves their tolerances to pre- and post-harvest stress during processing and throughout their shelf-life have never been studied.
Researchers from the University of Milan and Cardiff, the same ones involved in the EU Quafety project between 2012 and 2015, conducted a first transcriptomic analysis of rocket through the assembly of de novo RNA sequences, functional annotation and stress-induced expression analysis of 33,874 transcripts.
Rocket was subjected to various stresses. Pre-harvest stresses were increased salinity, heat and nitrogen starvation, while post-harvest stresses were cold, dehydration, dark and wounding.
Transcriptomic changes were analysed 24 hours after the stress was applied. Tanscription factors and the genes involved in plant growth regulation, autophagy, senescence and glucosinolate metabolism were the most affected mechanisms.
"We identified hundreds of genes with an unknown function but which only expressed in stressful conditions. They supplied us with important information to study stress response. Dehydration and wounding had the strongest effects on the transcriptome and the various stresses induced changes in the expression of genes correlated to overlapping groups of hormones. These data will enable the development of approaches to improve stress tolerance, quality and shelf-life with direct applications in the fresh-cut industry."
Source: Cavaiuolo M., Cocetta G., Spadafora N.D., Müller C.T., Rogers H.J., Ferrante A., 'Gene expression analysis of rocket salad under pre-harvest and postharvest stresses: A transcriptomic resource for Diplotaxis tenuifolia', 2017, PLOS ONE, Vol. 12(5): e0178119.
Publication date: 6/19/2017
Receive the daily newsletter in your email for free | Click here
Other news in this sector: