CAJ | 학술논문

通过接种7种甜樱桃根际优势促生细菌，检测植株光合及荧光参数、根系活力和根系呼吸等指标变化，探讨根际优势促生菌对植株生理代谢的影响。结果表明：绿针假单胞菌（ Pse1）、申氏不动杆菌（ Aci1）、争论贪噬菌（Var）、假单胞菌（Pse2）及边缘假单胞菌（Pse3）菌株均显著提高净光合速率（Pn）和水分利用率（ WUE）；鲁氏不动杆菌（ Aci2）和雷氏普罗威登斯菌（ Pro）处理的叶片胞间CO2浓度（ Ci）显著低于对照；PSⅡ最大光化学效率（ Fv／Fm）和PSⅡ的潜在活性（ Fv／Fo）均无显著变化；Pse1、Var、Pse2及Pse3显著提高根系活力，其中Pse3菌株接种后根系活力最高，达对照的2?0倍；Aci1处理根系总呼吸速率上升，Pse1、Pse2、Pse3和Pro处理影响了根系电子传递途径的分配比例，但各菌株处理对根系呼吸基础生化途径比例无显著影响。接种根际优势促生细菌整体上提高了樱桃植株净光合速率、水分利用效率和根系活力，不同菌属菌株处理效应存在差异。
통과접충7충첨앵도근제우세촉생세균，검측식주광합급형광삼수、근계활력화근계호흡등지표변화，탐토근제우세촉생균대식주생리대사적영향。결과표명：록침가단포균（ Pse1）、신씨불동간균（ Aci1）、쟁론탐서균（Var）、가단포균（Pse2）급변연가단포균（Pse3）균주균현저제고정광합속솔（Pn）화수분이용솔（ WUE）；로씨불동간균（ Aci2）화뢰씨보라위등사균（ Pro）처리적협편포간CO2농도（ Ci）현저저우대조；PSⅡ최대광화학효솔（ Fv／Fm）화PSⅡ적잠재활성（ Fv／Fo）균무현저변화；Pse1、Var、Pse2급Pse3현저제고근계활력，기중Pse3균주접충후근계활력최고，체대조적2?0배；Aci1처리근계총호흡속솔상승，Pse1、Pse2、Pse3화Pro처리영향료근계전자전체도경적분배비례，단각균주처리대근계호흡기출생화도경비례무현저영향。접충근제우세촉생세균정체상제고료앵도식주정광합속솔、수분이용효솔화근계활력，불동균속균주처리효응존재차이。
In this study, effects of plant growth?promoting rhizobacteria ( PGPR) on plant physiolog?ical metabolism, photosynthetic and fluorescence parameters, root vitality and root respiration were detected by inoculation of 7 types of plant growth?promoting rhizobacteria of sweet cherry. The results showed that net photosynthetic rate ( Pn) and water use efficiency ( WUE) were significantly in?creased in Pseudomonas chlororaphis ( Pse1) , Acinetobacter schindleri ( Aci1) , Variovorax paradox?us ( Var) , Pseudomonas sp. ( Pse2) and Pseudomonas marginalis ( Pse3) treatments, whereas the stomatal intercellular CO2 concentration ( Ci) in Acinetobacter lwoffii ( Aci2) and Providencia rettgeri ( Pro) treatments were significantly lower than those in the control. Maximum photochemical effi?ciency of PSⅡ ( Fv/Fm) and potential activity of PSⅡ ( Fv/Fo) changed slightly in the control and 7 treatments. Root vitalities were significantly increased in Pse1, Var, Pse2 and Pse3, especial?ly in Pse3, which was 2?0 times higher than that in the control. Root total respiration rate was in?creased significantly in Aci1 treatment. Contribution of root electron transport pathway was altered in Pse1, Pse2, Pse3 and Pro treatments, whereas the basis biochemical pathways were changed slight?ly in all the treatments and the control. In conclusion, PGPR inoculation increases net photosynthet?ic rate, water use efficiency and root vitality, but treatment effects are different among bacterial strains in different species.