Expression of Ethylene Biosynthetic Genes Regulated by Pollination associated Factors in Doritaenopsis hybrida Flowers

Pollination of flowers initiates postpollination development in orchid (Doritaenopsis hybrida Hort.) flowers, including perianth senescence, stigma closure, and ovary development. Because ethylene is thought to play a key role in coordinating these developmental changes, the authors studied the temporal and spatial patterns of expression of genes encoding 1 aminocyclopropane 1 carboxylic acid (ACC) synthase and ACC oxidase following pollination associated factor treatments in orchid flowers. Both ACC synthase and ACC oxidase mRNA accumulation in the various parts of the flowers is induced by auxin, and ethylene, but not by emasculation. The patterns of both ACC synthase and ACC oxidase mRNA accumulation are similar in all floral organs following auxin and ethylene treatments. Further, in situ hybridization analysis indicates that the ACC oxidase mRNA is localized in epidermal and parenchyma cells of the stigma after auxin and ethylene treatments. The putative roles of auxin, ethylene and emasculation are discussed in terms of the regulation of ACC synthase and ACC oxidase gene expression in flowers.

黄瓜去雄打老叶能增产

一、黄瓜去雄花:黄瓜是雌花、雄花同株植物。黄瓜的雄花远比雌花多,这些雄花大多无用,既消耗水分,又消耗养分,对增产不利。

如何使板栗树多开雌花

实践证明,通过增施磷肥,提高土壤中速效磷含量,并进行合理修剪,除去雄花枝、

Effects of Buddlejae Flos Granules on Inflammatory Factors TGF-β1,NF-κB,IL-10 and IL-12 in Lacrimal Gland Cells of Castrated Male Rabbits

Objective To observe the effects of Buddlejae Flos (Mi Meng Hua,密蒙花) granules on the expression of TGF-β1, NF-κB, IL-10 and IL-12 in lacrimal gland cells in castrated male rabbits. Methods A total of 30 New Zealand male white rabbits were randomly divided into 5 groups. Group A: blank group;group B: model group;group C: Buddlejae Flos (Mi Meng Hua,密蒙花) granules group;group D: placebo group;group E: testosterone group. Except for the group A, all rabbits were treated with bilateral testicular and epididymis resection before intervention. Rabbits in group C were administered with Buddlejae Flos (Mi Meng Hua,密蒙花) granules (100 mg/kg), 3 times per day;Rabbits in group D were administered with normal saline, 3 times per day. Rabbits in group E were injected with testosterone propionate (0.5 mL/kg) in the thigh muscle, every 3 days. Schirmer I test (SIT) and break-up time (BUT) were measured on 1st day before modeling and 30th day after modeling. After 30 days of intervention, all rabbits were sacrificed. The removal lacrimal gland was stained in immunohistochemica staining. The expression of TGF-β1, NF-κB, IL-10 and IL-12 in lacrimal gland tissue of each group was detected, and the structure of lacrimal gland was observed. Results The results of SIT and BUT showed that there was significant difference between group B and D compared with group A (P < 0.05). There were no significant differences between group C and E (P > 0.05). There were no significant differences in the comparison of inflammatory factors TGF-β1, NF-κB, IL-10 and IL-12 between group B and D (P > 0.05). There were significant differences between group B and D compared with other groups (P < 0.01). There was no significant difference between group A, C and E (P > 0.05). Conclusions Buddlejae Flos (Mi Meng Hua,密蒙花) granules have an inhibitory effect on the expression of TGF-β1, NF-κB, IL-10 and IL-12 in castrated male rabbit lacrimal gland cells, and alleviate the inflammation of lacrimal gland tissue by inhibiting the expression of TGF-β1, NF-κB, IL-10 and IL-12 in lacrimal gland tissue, so as to treat dry eye.

Effect of Flos Buddlejae Granules on Apoptosis Factors Bax,Bcl-2,Fas and FasL in Lacrimal Gland Cells of Castrated Male Rabbits

Objective To observe the effect of different concentration Flos Buddlejae(Mi Meng Hua,密蒙花)granules on apoptosis factors of lacrimal gland cells of castrated male rabbits,and study the treatment effects of Flos Buddlejae(Mi Meng Hua,密蒙花)granules in the dry eye model of castrated male rabbits.Methods Flos Buddlejae(Mi Meng Hua,密蒙花)raw material was made into granules.Thirty healthy adult New Zealand rabbits were randomly divided into five groups,six rabbits in each group.Group A:blank group,Group B:model group,Group C:Flos Buddlejae(Mi Meng Hua,密蒙花)granule group,Group D:placebo group,Group E:testosterone group.Except for group A,all rabbits underwent removal of bilateral testis and epididymis.Rabbits in group C were administered Flos Buddlejae(Mi Meng Hua,密蒙花)granules(100 mg/kg),three times per day;rabbits in group D were administered normal saline,three times per day.Rabbits in group E were injected with testosterone propionate(0.5 mL/kg)in the thigh muscle,every 3 days.All rabbits were tested by Schirmer I test(SIT)and tear film break-up time(BUT)before operation and 4 weeks after operation.After 4 weeks,all rabbits were sacrificed by air embolism and clipping of the lacrimal gland.Apoptosis factors,including Bax,Bcl-2,Fas and FasL of lacrimal gland cells were characterized by immunohistochemistry,and resulting data were statistically analyzed.Results(1)Comparison of SIT and BUT before and after operation:There were statistically significant differences between groups B and D(P<0.01),but not among other groups(P>0.05).(2)Comparison of apoptosis factors Bax,Bcl-2 Fas and FasL:In a comparison of groups B and D,there was no statistically significant difference after operation(P>0.05).In a comparison of the other groups,there were statistically significant differences(P<0.01).In comparisons among A,C and E groups,there were no statistically significant differences(P>0.05).Conclusion Compared with androgen,Flos Buddlejae(Mi Meng Hua,密蒙花)granules caused similar but slightly weaker depression of Bax,Fas and FasL,and increased expression of Bcl-2.