- Assistant Nursery Manager - Tasmania, Australia
- Tissue Culture Lab / Operations Manager - Victoria, Australia
- Irrigation Manager - Tasmania or Victoria
- Chief Executive Officer Hortifrut IG Berries
- Head of Operations - Dubai, United Arab Emirates
- Greenhouse grower / production manager - Brazil
- Experienced International Trade Specialist
- Packaging Supervisor
- Nursery Production Manager South Australia
- Advisor / Account manager horticulture Japan
Top 5 -yesterday
Top 5 -last week
Top 5 -last month
RNA discovery could help boost plant heat, drought tolerance
The discovery could help illuminate a new pathway to engineering drought- and salt-tolerant plants, including food crops, said Dr. Liming Xiong, AgriLife Research associate professor, Dallas.
A side-by-side comparison shows better heat and drought tolerance in thale cress plants whose level of a specific RNA was increased. (Texas A&M AgriLife Research photo)
The research is published in the journal Plant Physiology and online at http://bit.ly/2ydul4D.
“This is the first finding of a long non-coding RNA, or lncRNA, that regulates plant tolerance to adverse, non-physiological external factors,” Xiong said.
The lncRNA his team discovered in thale cress plants existed in low numbers under non-stress conditions, but levels increased when the plants encountered drought or salt stress, he said. Manually increasing the level of the lncRNA showed corresponding increases in drought and salt tolerance compared with plants where the lncRNA level was unaltered.
Most RNA direct or “code” cell machinery to produce proteins. Non-coding RNA, or ncRNA, does not direct protein production but could affect how gene expressions manifest in innumerable other ways. As such, they are considered regulators of important biological processes, Xiong said.
“And there are different types of ncRNA,” he said. “Small ncRNA have received much attention in recent years, but in many long, or lncRNA, like the one we found to affect drought and salt tolerance in thale cress, the biological functions remain unknown.”
The basic difference between small and long non-coding RNA is the number of nucleotides — the structural building blocks of RNA. Long have more.
Xiong said investigating the effects of lncRNA is a novel approach to plant drought and salt tolerance research.
“Most of the current work on improving plant stress tolerance does not focus on lncRNA but on the genes that code protein production,” he said. “However, manipulation of those protein-encoding genes often impairs plant growth and development.”
But the lncRNA studied by Xiong’s team can be tweaked without any apparent detriment to the plant’s health, he said.
“It’s early still, but we could be on the brink of a whole new approach to engineering drought and salt tolerance in plants, including food plants,” Xiong said. “Our next step will be to engineer the lncRNA levels in plants other than thale cress and to test whether it might improve drought and salt tolerance across a broader spectrum.”
Source: AgriLife Today (Gabe Saldana)
Receive the daily newsletter in your email for free | Click here
Other news in this sector:
- 2022-06-23 Chinese market embraces new hydrangea
- 2022-06-23 New greenhouse lighting helps researchers’ urgent need for speed
- 2022-06-23 Budgam farmer’s business blooms as he transitions into floristry
- 2022-06-21 Eco Bank and pollinators
- 2022-06-20 Elevated light intensity compensates for nitrogen deficiency during chrysanthemum growth
- 2022-06-20 New HBA cut hydrangeas Royal Supreme and Royal Highness in production
- 2022-06-15 University of Florida releases 4 new caladium varieties
- 2022-06-14 Nursery enters nine new plants for National Plant Show awards
- 2022-06-13 Flower farmers and florists, the Van Der Meers, open up on how to make a family business
- 2022-06-13 Physiological and biochemical regulations confer drought tolerance in pot marigold
- 2022-06-13 Cryopreservation of ornamental plants and fruit crops
- 2022-06-13 Wyevale Nurseries enters nine new plants for the National Plant Show awards
- 2022-06-10 Genomic insights into the important ornamental and stress resistance traits of Prunus mume
- 2022-06-10 300 varieties of annuals and perennials on Artemis flower farm
- 2022-06-10 New Impatiens varieties became a focus for breeders
- 2022-06-10 "A true nude rose is finally here"
- 2022-06-09 Plants with natural resistances and environmentally sustainable on the showcase
- 2022-06-08 National coordinators meet in Sweden to discuss plant genetic resources
- 2022-06-07 Recommendations for indoor seedling production
- 2022-06-07 Tropical flowers and plants are easy to grow in Northeast Ohio