Experts urged to ratify Minamata Convention to phase out mercury-added products পারদযুক্ত পণ্যের ব্যবহার বন্ধে মিনামাতা কনভেনশন অনুমোদনের আহ্বান সেন্টমার্টিন সৈকতে প্লাস্টিকের আগ্রাসন 72 birds die eating pesticide-treated masakalai Educate girls to save the planet শিশুর সর্দি-কাশি সারানোর ঘরোয়া উপায় 50 Books All Kids Should Read Before They’re 12 24 thousand under 5 children die of pneumonia in Bangladesh annually গ্রিনহাউস গ্যাস কমানোর লক্ষ্যে নানা উদ্যোগ Maldives: Eco-friendly product export destination for Bangladesh

The tree that bleeds… metal?


Heavy metals like nickel and zinc are usually the last thing that plants want to grow next to in high concentrations.

But a specialised group, known as hyperaccumulators, have evolved to take up the normally toxic metals into their stems, leaves and even seeds.

Researchers have been studying Pycnandra acuminata in particular – a tree that grows on the island of New Caledonia in the south Pacific.

They think it may use the nickel to defend against insects.

Its latex has an unusual blue-green colour as it contains up to 25% nickel.

"Pycnandra acuminata is a large (up to 20m tall) rare rainforest tree, restricted to remaining patches of rainforest in New Caledonia," says Dr Antony van der Ent, a researcher at the University of Queensland who has been studying the tree.

read more: https://www.bbc.com/news/science-environment-45398434

Posted by on Sep 6 2018. Filed under Environmental livelihood, News at Now, News From Roots. You can follow any responses to this entry through the RSS 2.0. You can leave a response or trackback to this entry

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