| WANG Yongjun,ZHANG Shicui. 2005. Localization of nitric oxide synthase in the developing gonads of amphioxus Branchiostoma belcheri tsingtauense. Acta Oceanologica Sinica, (5):120－126 |
| Localization of nitric oxide synthase in the developing gonads of amphioxus Branchiostoma belcheri tsingtauense |
| Localization of nitric oxide synthase in the developing gonads of amphioxus Branchiostoma belcheri tsingtauense |
| Received:March 10, 2005 Revised:June 02, 2005 |
| DOI： |
| Key words:amphioxus Branchiostoma nitric oxide synthase gonad localization |
| 中文关键词: amphioxus Branchiostoma nitric oxide synthase gonad localization |
| 基金项目: |
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| Abstract: |
| The localization of nitric oxide synthases (NOS) is dealed with in the developing gonads of amphioxus Branchiostoma belcheri tsingtauense.It was found by NADPH-diaphorase staining that (1) NOS activity was present in the nuclear membranes of germinal vesicles during the entire period of oocyte development; (2) NOS was localized in both the nuclear membranes and the perinuclear region of cytoplasm in the vitellogenetic oocytes; (3) NOS was relocated in the cortical layer in the mature egg; (4) NOS activity was present in spermatocytes, but not in the spermatogonia in the middle of October; (5) NOS was detected in both spermatozoa and spermatids as well as spermatocytes during the breeding season.This is the first report on the distribution pattern of NOS in the developing gonads in protochordates.These results suggest a role for NOS in the functioning of the nuclear membranes and yolk synthesis during oogenesis and in cell division and differentiation during spermatogenesis. |
| 中文摘要: |
| The localization of nitric oxide synthases (NOS) is dealed with in the developing gonads of amphioxus Branchiostoma belcheri tsingtauense.It was found by NADPH-diaphorase staining that (1) NOS activity was present in the nuclear membranes of germinal vesicles during the entire period of oocyte development; (2) NOS was localized in both the nuclear membranes and the perinuclear region of cytoplasm in the vitellogenetic oocytes; (3) NOS was relocated in the cortical layer in the mature egg; (4) NOS activity was present in spermatocytes, but not in the spermatogonia in the middle of October; (5) NOS was detected in both spermatozoa and spermatids as well as spermatocytes during the breeding season.This is the first report on the distribution pattern of NOS in the developing gonads in protochordates.These results suggest a role for NOS in the functioning of the nuclear membranes and yolk synthesis during oogenesis and in cell division and differentiation during spermatogenesis. |
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