摘 要：
为了探究丛枝真菌对镉(Cd)胁迫下小麦光合系统的调节作用,采用土培试验,以小麦(Triticum aestivum L.)百农207和摩西球囊霉菌(Glomus mosseae GS)为材料,研究了Cd胁迫下接种丛枝真菌对小麦叶片光合速率、气孔导度、蒸腾速率、胞间CO_2浓度、叶绿素荧光参数、叶绿素含量、微量元素铁(Fe)、镁(Mg)、锌(Zn)和镉(Cd)含量的影响。结果表明,接种丛枝真菌的小麦在5 mg·kg~(-1)Cd胁迫下较未接种小麦,其光合速率、蒸腾速率和气孔导度分别升高了11. 16%、21. 76%和14%,光化学最大效率和叶绿素含量分别升高了5. 56%和6. 56%,Fe、Mg和Zn含量分别升高了6. 63%、20%和4. 29%,Cd含量和胞间CO_2浓度分别降低了18. 50%和17. 62%; 10 mg·kg~(-1)Cd胁迫时,光合速率、蒸腾速率和气孔导度分别升高了28. 65%、41. 25%和50%,光化学最大效率和叶绿素含量分别升高了1. 43%和15. 33%,Fe、Mg和Zn含量分别升高了7. 81%、30. 77%和9. 74%,Cd含量和胞间CO_2浓度分别降低了32. 20%和6. 45%。因此,接种丛枝真菌可以缓解Cd胁迫以及提高小麦叶绿素含量从而增强光合作用。
译 名：
Regulation of arbuscular mycorrhizal fungi on photosynthesis system of wheat under cadmium stress
作 者：
ZHAO Jianan;HAN Leilei;WANG Hongxia;LI Haixia;YUAN Zuli;College of Life Science,Henan Agricultural University;
关键词：
arbuscular mycorrhizal fungi(AMF);;Cd stress;;wheat;;photosynthesis system
摘 要：
To investigate the regulation of arbuscular mycorrhizal fungi( AMF) on photosynthesis of wheat under cadmium( Cd) stress,the pot-experiment was carried out with wheat( Triticum aestivum L.) bainong 207 and Glomus mosseae( GS) as materials. Effects of arbuscular mycorrhizal fungi on photosynthetic rate,conductance to H_2O,transpiration rate,intercellular CO_2 concentration,chlorophyll fluorescence,chlorophyll contents,trace element iron( Fe),magnesium( Mg),zinc( Zn) and cadmium( Cd) contents in wheat leaves were studied under Cd stress. The results showed that the photosynthetic rate,transpiration rate,conductance to H_2O were increased by 11. 16%,21. 76% and14%,chlorophyll fluorescence,chlorophyll content increased 5. 56% and 6. 56%,Fe,Mg and Zn contents increased 6. 63%,20% and 4. 29%,the content of Cd and intercellular CO_2 concentration decreased 18. 50% and 17. 62% under 5 mg·kg-1 Cd stress,respectively. Under 10 mg·kg~(-1) Cd stress,the photosynthetic rate,transpiration rate,conductance to H_2O were increased by 28. 65%,41. 25% and 50%; chlorophyll fluorescence,chlorophyll content were increased by 1. 43% and 15. 33%; Fe,Mg and Zn contents by increased were 7. 81%,30. 77% and 9. 74%,but the contentof Cd and intercellular CO_2 concentration decreased 32. 20% and 6. 45%,respectively. Therefore,inoculation of AMF could alleviate Cd stress and increased the chlorophyll content of wheat to enhance photosynthesis.
