Pearl not result of foreign body reaction in oysters: Andaman-based scientist's latest finding

economictimes.indiatimes.com
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The research experiment concluded that granular cell proliferation and aragonite crystal formations in batch A1 and irregular pearl sac formation in the mantle tissue surgically operated with graft and shell particle in batch 2 have demonstrated the natural characteristic of genotypes of mantle tissue in the nacreous secretion process, he said.
After achieving breakthroughs in pearl culture like developing world's biggest black pearl and even in the shape of Lord Ganesha, Andaman and Nicobar-based independent scientist Ajai Kumar Sonkar on Sunday said his latest research finding that 'pearl is not a result of foreign body reaction in oyster' has scope to transform the global pearl culture industry. Sonkar's finding -- from his research study 'Tissue culture in marine oysters' -- has overturned the age-old belief held by most scientists that pearl was formed when a foreign substance gets stuck between the Oyster's internal organ called mantle and its shell. And oyster produces a substance called nacre -- crystalline material made of calcium carbonate and an organic protein called conchiolin -- for creating the shell and the same it uses for covering the foreign matter, thereby forming a pearl. Thus, pearl is formed as part of a biological process within the oyster. But in cultured pearls, small foreign substances are manually inserted in the mantle of oysters to produce pearls. Speaking to PTI, Sonkar said, "Earlier in many global conferences and papers, I used to say that pearls are a result of a foreign-body reaction. But it is wrong. My latest research has revealed this." The research has revealed that the mantle's natural characteristic is to release calcium carbonate and it does not secrete this only when a foreign substance enters in it, he said. Sonkar (48)…
PTI
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