Navigation Links
Frankincense is for life, not just for Christmas

At this time of year it is hard to escape the Three Wise Men, riding their camels across Christmas cards and appearing in minature form in countless school nativity plays across the world, bearing their gifts for the infant Jesus. Whilst we are all familiar with gold (especialliy in this Olympic year), it is the mention of frankincense and myrrh that really says "Christmas" to us and and takes our imaginations back to ancient times. But you might be surprised to learn that these two fragrances are still big business today; for example, Ethiopia alone trades around 4000 tonnes of frankincense every year. This is all the more remarkable because a single tree from which the resin is harvested will typically yield about 200g per year. The main international trade comes from a tree called Boswellia papyrifera, and Ethiopia is the main exporting country.

Frankincense is harvested by wounding the bark of trees and collecting the resin that is subsequently released from the wound, a process known as tapping. Tapping is carried out at several spots along the stem, using a traditional type of tool that resembles a chisel. The procedure is repeated in 8 tapping rounds during the dry season, which lasts about 8 months. But high demand means that many trees are being over-exploited and populations are at risk of dying out, threatening the livelihoods of villagers who depend on them.

But help may be on hand as the results of a new study by botanists from Ethiopia and the Netherlands led by Motuma Tolera, which could secure a future for the trees by revealing the anatomy of the resin secretory system.

Motuma Tolera explains, "In some areas, the high demand for frankincense is causing over-tapping, which is bad for a couple of reasons. Tapping the tree creates wounds in the stem that take resources to be healed, and more wounds create more opportunities for insects to attack the tree. It's not a surprise that some trees die. This is bad for the tree but also for the people living in those areas, since they depend on the resin production, both economically and culturally.

"One of the problems is the lack of knowledge of the type, architecture and distribution of resin producing, storing and transporting structures in the tree. Such knowledge is needed for improved tapping techniques in the future."

The study, published this month in the Annals of Botany, provides this detailed knowledge for the first time.

Motuma Tolera said, "What we found was a 3-D network of inter-connected canals in the inner bark. Most of these canals are within a very narrow region of the inner bark, in a zone that is less than 7 millimeters thick. These allow for the transport of resin around the tree. We also found a few canals connecting deep into the xylem, the heart of the tree."

The findings will have practical applications for the people of Ethiopia and other frankincense producers. Traditional tapping starts with a shallow wound, from which a relatively small amount of resin is released. The wound is then re-opened later with a cut that goes a bit deeper and more resin is collected a process that is repeated over and over again. The amount of resin collected peaks after about 5 rounds of tapping, which the study suggests is the point at which the wound reaches the main region of resin canals.

Motuma Tolera says, "Our results suggest that tapping can become more efficient. A cut that goes deeper, earlier in the tapping cycle, may drain the resin more effectively. Since the 3-D resin canal network may allow for long distance movement of resin when it is intact, this would be an option to reduce the number of cuts, and reduce the damage to the trees. New studies will be needed to show how such improvements may keep trees healthy but still productive for resin production. This opens new ways for a more sustainable frankincense production system."

"It's nice to discover something new, but here we also have the opportunity to give something back to the people who helped us with the study. I hope everyone in Lemlem Terara, but also elsewhere in Ethiopia, will benefit from what we have found in the future." Tolera says.

The team hope the results mean more Boswellia trees will live to see next Christmas.


Contact: Annals of Botany
Oxford University Press

Related biology news :

1. Elk bones tell stories of life, death, and habitat use at Yellowstone National Park
2. Exercise boosts satisfaction with life, researchers find
3. First evidence of fish sensing geomagnetic fields from a Czech Christmas market
Post Your Comments:
(Date:10/27/2015)... -- Munich, Germany , October ... automatically maps data from mobile eye tracking videos created ... that they can be quantitatively analyzed with SMI,s analysis ... , October 28-29, 2015. SMI,s Automated Semantic Gaze ... tracking videos created with SMI,s Eye Tracking Glasses ...
(Date:10/26/2015)... India , October 26, 2015 ... --> adds ... 2015 to 2021 as well as ... 2015-2019 research reports to its collection ... . --> ...
(Date:10/26/2015)... Calif. , Oct. 26, 2015  Delta ID ... biometric authentication to mobile and PC devices, announced its ... smartphone, the arrows NX F-02H launched by NTT DOCOMO, ... NX F-02H is the second smartphone to include iris ... technology in ARROWS NX F-04G in May 2015, world,s ...
Breaking Biology News(10 mins):
(Date:12/1/2015)... , Dec. 1, 2015  Symic, a clinical-stage ... the extracellular matrix (ECM), today announced that it has ... advance the company,s pipeline, including its lead candidates SB-030 ... and includes the participation by all existing major investors, ... brings the total capital raised by Symic to over ...
(Date:12/1/2015)... 1, 2015 Dr. Harry Lander , President of Regen, ... Chief Science Officer and recruits five distinguished ... , President of Regen, expands his role to include ... recruits five distinguished scientists to join advisory team ... his role to include serving as Chief ...
(Date:12/1/2015)... (PRWEB) , ... December 01, 2015 , ... Matthew “Tex” ... new post, VerMilyea will oversee all IVF lab procedures as well as ... fertility preservation. , “We traveled 7,305 miles to Auckland, New Zealand to bring home ...
(Date:11/30/2015)... ... 2015 , ... Global Stem Cells Group Chile ... Central America and abroad for the first Iberoamerican Convention on Aesthetic Medicine, Cosmetology ... Testart will present and discuss new trends in anti-aging stem cell treatments, regenerative ...
Breaking Biology Technology: