Navigation Links
How do phytoplankton survive a scarcity of a critical nutrient?

Phytoplanktontiny, photosynthetic organismsare essential to life on Earth, supplying us with roughly half the oxygen we breathe. Like all other life forms, phytoplankton require the element phosphorus to carry out critical cellular activity, but in some parts of the world's ocean, P is in limited supply. How do phytoplankton survive when phosphorus is difficult to find?

Phytoplankton can alter their biochemical make-up according to the availability of nutrients in the water. When phosphorus (P) is particularly abundant in the water, phytoplankton produce and store a form of P called polyphosphate, or poly-P, to use later during times when P is less abundant. The accepted wisdom has been that poly-P was would be found stored by micro-organisms in waters where P was abundant and would be scarce in waters depleted of P. But when a group of researchers from the Woods Hole Oceanographic Institution (WHOI) and the Bigelow Laboratory for Ocean Sciences tested that notion, conducting the most comprehensive survey of poly-P content and distribution in the western North Atlantic, what they found was surprising.

Rather than finding low levels of poly-P in the phytoplankton in the Sargasso Sea where P is scarce, they found the phytoplankton were enriched with poly-P when compared to those in the nutrient rich waters in the western North Atlantic the opposite of what they had expected. They also found that in low-P environments, poly-P was more readily recycled from sinking particles, retaining it in shallower waters where phytoplankton live and making it available for their use.

"We've know that Poly-P existed in phytoplankton for a very long time. The conventional wisdom that phytoplankton made more Poly-P when they had more phosphorus just made so much intuitive sense that few people have worked on this molecule," said WHOI marine chemist Ben Van Moy, the corresponding author on the study. "However, there were a few hints in the literature that the whole story on poly-P was not completely wrapped up. We certainly didn't set out thinking that we might upend current thinking, and it took us a long time before we would believe our own results. I think the larger message from fundamental discoveries like this is that we have so much more to learn about phosphorous and how phytoplankton deal with its scarcity in certain regions of the sea. Hopefully this paper will be a launching point for a lot of exciting science."

The study, "Accumulation and enhanced cycling of polyphosphate by Sargasso Sea plankton in response to low phosphorus," was recently published in the Proceedings of the National Academy of Sciences (PNAS).


Contact: WHOI Media Office
Woods Hole Oceanographic Institution

Related biology news :

1. Phytoplankton and zooplankton biomass will decrease 6 percent and 11 percent due to climate change
2. IU-led team uncovers process for chameleon-like changes in worlds most abundant phytoplankton
3. Scientists discover huge phytoplankton bloom in ice-covered waters
4. Want to survive the zombie apocalypse? This cologne could be the key (video)
5. Mountain pikas, relatives of rabbits, survive at warm sea-level temperatures by eating mosses
6. Bed bugs can survive freezing temperatures, but cold can still kill them
7. Can (and Should) Retail/Wi-Fi Analytics Help Retailers Survive in the Age of Amazon?
8. Discovered how mice survive infection by virulent Toxoplasma parasites
9. Infection biology: How Legionella subverts to survive
10. Rare primate species needs habitat help to survive
11. Dietary flexibility may have helped some large predators survive after last ice age
Post Your Comments:
Related Image:
How do phytoplankton survive a scarcity of a critical nutrient?
(Date:11/2/2015)... PARK, Calif. , Nov. 2, 2015  SRI ... $9 million to provide preclinical development services to the ... the contract, SRI will provide scientific expertise, modern testing ... wide variety of preclinical pharmacology and toxicology studies to ... --> The PREVENT Cancer Drug Development ...
(Date:10/29/2015)... -- Connected health pioneer, Joseph C. Kvedar , MD, ... and wellness, and the business opportunities that arise from ... of Healthy Things . Long before health and ... Kvedar, vice president, Connected Health, Partners HealthCare, was creating ... from the hospital or doctor,s office into the day-to-day ...
(Date:10/27/2015)... 27, 2015 Synaptics Inc. (NASDAQ: SYNA ), ... Google has adopted the Synaptics ® ClearPad ® ... power its newest flagship smartphones, the Nexus 5X by ... --> --> Synaptics works ... strategic collaboration in the joint development of next generation ...
Breaking Biology News(10 mins):
(Date:11/25/2015)... -- Studies reveal the differences in species ... the way for more effective treatment for one of the ... --> --> Gum disease ... cats, yet relatively little was understood about the bacteria associated ... conducted by researchers from the WALTHAM Centre for Pet Nutrition ...
(Date:11/25/2015)... 2015 Orexigen® Therapeutics, Inc. (Nasdaq: OREX ... fireside chat discussion at the Piper Jaffray 27th Annual ... The discussion is scheduled for Wednesday, December 2, at ... A replay will be available for 14 days after ... Julie NormartVP, Corporate Communications and Business Development , BrewLife(858) ...
(Date:11/24/2015)... , Nov. 24, 2015 Cepheid (NASDAQ: ... be speaking at the following conference, and invited investors ... York, NY      Tuesday, December 1, 2015 at ... York, NY      Tuesday, December 1, 2015 at ... Healthcare Conference, New York, NY ...
(Date:11/24/2015)... 2015 /PRNewswire/ - Aeterna Zentaris Inc. (NASDAQ:  AEZS) (TSX: AEZ) ... of the Toronto Stock Exchange, confirms that as of ... corporate developments that would cause the recent movements in ... --> About Aeterna Zentaris Inc. ... Aeterna Zentaris is a specialty biopharmaceutical company engaged ...
Breaking Biology Technology: