The immunohistochemical localization of IAA and the comparison of their relative levels were carried out for the first time in the anthers of Nongken 58S and its wild type Nongken 58 (Oryza sativa subsp. japonica) af...The immunohistochemical localization of IAA and the comparison of their relative levels were carried out for the first time in the anthers of Nongken 58S and its wild type Nongken 58 (Oryza sativa subsp. japonica) after long_day and short_day treatments. The distribution of free_IAA in anthers and its dynamic variation could be reflected by this method. The results showed that the IAA level in the anthers of Nongken 58S after long_day treatment was much lower than that in short_day_treated Nongken 58S and those in wild type Nongken 58 in five stages from pistil and stamen primordia formation to late uninucleate stage. The possible reasons for IAA deficiency in Nongken 58S_LD anthers and its relationship with fertility alteration were also discussed.展开更多
The aims of the study were to determine the distribution of inhibin and its α subunit in some rat tissues by an immunohistochemical method of streptavidin-biotin complex （SABC） and to assess the transport mechanism...The aims of the study were to determine the distribution of inhibin and its α subunit in some rat tissues by an immunohistochemical method of streptavidin-biotin complex （SABC） and to assess the transport mechanism of inhibin by investigating the localization of inhibin and α subunits in the central nervous system （mainly in hypothalamus and pituitary） of ovariectomized rats. Investigations on the extragonadal tissues of ovariectomized rats showed positive expression of inhibin and its α subunit in heart, kidney, spleen, pancreatic gland cells, but no positive reaction sites were seen in lung, liver, submaxillary gland, and adrenal gland. After injection with inhibin α subunit fragment or inhibin extract, positive reaction sites were observed in hypothalamus and pituitary of ovariectomized rats by SABC. Inhibin and its subunit was present in a wide variety of nonreproductive organs and tissues, and its expression was tissue specific, which indicated that inhibin might play a role in regulating tissue function through autocrine/paracrine mechanisms. Inhibin dimer and α subunit could be transported through the BBB by the method of “separation and reconstruction”.展开更多
文摘The immunohistochemical localization of IAA and the comparison of their relative levels were carried out for the first time in the anthers of Nongken 58S and its wild type Nongken 58 (Oryza sativa subsp. japonica) after long_day and short_day treatments. The distribution of free_IAA in anthers and its dynamic variation could be reflected by this method. The results showed that the IAA level in the anthers of Nongken 58S after long_day treatment was much lower than that in short_day_treated Nongken 58S and those in wild type Nongken 58 in five stages from pistil and stamen primordia formation to late uninucleate stage. The possible reasons for IAA deficiency in Nongken 58S_LD anthers and its relationship with fertility alteration were also discussed.
文摘The aims of the study were to determine the distribution of inhibin and its α subunit in some rat tissues by an immunohistochemical method of streptavidin-biotin complex （SABC） and to assess the transport mechanism of inhibin by investigating the localization of inhibin and α subunits in the central nervous system （mainly in hypothalamus and pituitary） of ovariectomized rats. Investigations on the extragonadal tissues of ovariectomized rats showed positive expression of inhibin and its α subunit in heart, kidney, spleen, pancreatic gland cells, but no positive reaction sites were seen in lung, liver, submaxillary gland, and adrenal gland. After injection with inhibin α subunit fragment or inhibin extract, positive reaction sites were observed in hypothalamus and pituitary of ovariectomized rats by SABC. Inhibin and its subunit was present in a wide variety of nonreproductive organs and tissues, and its expression was tissue specific, which indicated that inhibin might play a role in regulating tissue function through autocrine/paracrine mechanisms. Inhibin dimer and α subunit could be transported through the BBB by the method of “separation and reconstruction”.
