The leaf thickness, stratum corneum thickness, epidermis thickness, palisade tissue thickness and sponge tissue thickness of Streblus asper leaves at different ages were observed by using paraffin section technology a...The leaf thickness, stratum corneum thickness, epidermis thickness, palisade tissue thickness and sponge tissue thickness of Streblus asper leaves at different ages were observed by using paraffin section technology and optical microscopic observation to explore the anatomic adaptive response mechanism to drought stress, also to provide a theoretical basis for S. asper introduction. The results showed that under drought stress, various parts of S. asper leaf anatomy showed some characteristics adapted to water environment. Leaf palisade tissue cells became shorter, increasing from 1-2 layers to 2-3 layers; sponge cells were arranged in neat and compact long column shape, and the upper and down epidermis were thickened. The upper and down epidermis produced more trichomes to resist stress. After rehydration, leaf porosity increased and trichomes had a corresponding reduction. The principal component analysis showed that the stratum corneum thickness, leaf thickness and palisade were available to describe the impact of stress and rehydration on different ages of S. asper leaf anatomy. Under drought stress, S. asper leaf stratum corneum thickness and leaf thickness increased and leaves returned to normal after rehydration. Middle and top leaves were better than basal leaves in response to drought stress sensitivity.展开更多
To detect the changes of adenylate cyclase(AC)and guanylate cyclase(GC)in the four cerebral regions that are concerned with psychogenic dependence of morphine in rats,including the frontal cortex,lenticula,corpus amyg...To detect the changes of adenylate cyclase(AC)and guanylate cyclase(GC)in the four cerebral regions that are concerned with psychogenic dependence of morphine in rats,including the frontal cortex,lenticula,corpus amygdaloideum,and hippocampus.To discuss the relation between the expressions of AC and GC with the psychogenic dependence on morphine.Different periods of morphine‑dependent rat models were established,and enzyme histochemistry was used to detect the variations of AC and GC in four cerebral regions.Compared with the control group,AC and GC in all the morphine‑dependent groups increased.The data indicated that the amounts of AC and GC were significantly different between the morphine‑dependent groups and the control group when tested at periods of 1 week,2 weeks,4 weeks,and 8 weeks(P<0.05 or P<0.01).There were significant differences when comparing the 1‑week group with the 2‑week,4‑week,and 8‑week groups(P<0.05 or P<0.01).There were significant differences when comparing the 2‑week dependent group with the 4‑week dependent group or the 8‑week dependent group(P<0.05 or P<0.01).The activities of AC and GC increased in four cerebral regions of morphine‑dependent rats.The psychogenic dependence on morphine appears to be closely linked to the upgrade of AC and GC.展开更多
基金Supported by the Special Fund for the Agricultural Science and Technology Innovation of Hainan Academy of Agricultural Sciences(Qiongnongyuan No.[2013]32)~~
文摘The leaf thickness, stratum corneum thickness, epidermis thickness, palisade tissue thickness and sponge tissue thickness of Streblus asper leaves at different ages were observed by using paraffin section technology and optical microscopic observation to explore the anatomic adaptive response mechanism to drought stress, also to provide a theoretical basis for S. asper introduction. The results showed that under drought stress, various parts of S. asper leaf anatomy showed some characteristics adapted to water environment. Leaf palisade tissue cells became shorter, increasing from 1-2 layers to 2-3 layers; sponge cells were arranged in neat and compact long column shape, and the upper and down epidermis were thickened. The upper and down epidermis produced more trichomes to resist stress. After rehydration, leaf porosity increased and trichomes had a corresponding reduction. The principal component analysis showed that the stratum corneum thickness, leaf thickness and palisade were available to describe the impact of stress and rehydration on different ages of S. asper leaf anatomy. Under drought stress, S. asper leaf stratum corneum thickness and leaf thickness increased and leaves returned to normal after rehydration. Middle and top leaves were better than basal leaves in response to drought stress sensitivity.
文摘To detect the changes of adenylate cyclase(AC)and guanylate cyclase(GC)in the four cerebral regions that are concerned with psychogenic dependence of morphine in rats,including the frontal cortex,lenticula,corpus amygdaloideum,and hippocampus.To discuss the relation between the expressions of AC and GC with the psychogenic dependence on morphine.Different periods of morphine‑dependent rat models were established,and enzyme histochemistry was used to detect the variations of AC and GC in four cerebral regions.Compared with the control group,AC and GC in all the morphine‑dependent groups increased.The data indicated that the amounts of AC and GC were significantly different between the morphine‑dependent groups and the control group when tested at periods of 1 week,2 weeks,4 weeks,and 8 weeks(P<0.05 or P<0.01).There were significant differences when comparing the 1‑week group with the 2‑week,4‑week,and 8‑week groups(P<0.05 or P<0.01).There were significant differences when comparing the 2‑week dependent group with the 4‑week dependent group or the 8‑week dependent group(P<0.05 or P<0.01).The activities of AC and GC increased in four cerebral regions of morphine‑dependent rats.The psychogenic dependence on morphine appears to be closely linked to the upgrade of AC and GC.
