Vol. 12, Issue 3 (2023)

Author(s):
Nangki Tagi, Bornali Mahanta, Aparajita Borah and Pranjal Kumar Kaman

Abstract:
Histopathological study of nanocomposite treated okra roots showed few and poorly developed giant cells with substantial necrotic layer formation around the cells which may be due to hypersensitivity reactions (HR) in the tissue thereby inhibiting the further development of giant cells. Whereas, roots infected with Meloidogyne incognita shows induction of galls and specialized feeding sites called giant cells, disrupting the histological profile of root tissues. Meloidogyne incognita was able to enter the host tissue, feed and reproduce normally showing prominent giant cell formed around the infecting nematodes and causes significant cellular alteration, like multinucleate giant cells, hypertrophy and hyperplasia cells, dense cytoplasm and displacement of xylem and phloem parenchyma and other elements from their normal position.