02220naa a2200337 a 450000100080000000500110000800800410001902400270006010000230008724501700011026000090028052012050028965000280149465000160152265000280153865000250156665000090159165000190160065000100161965000140162965000170164365000280166065000140168865300170170270000210171970000240174070000200176470000220178470000170180677300590182320793192017-11-09       2017    bl uuuu     u00u1 u    #d7 a10.1111/ppa.126902DOI1 aBUENO, A. C. S. O.  aResponse of photosynthesis and chlorophyll a fluorescence in leaf scald-infected rice under influence of rhizobacteria and silicon fertilizer.h[electronic resource]  c2017  aLeaf scald caused by Monographella albescens reduces the photosynthetic area, causing yield losses in rice. This study investigated the efficacy of the rhizobacteria Burkholderia pyrrocinia (BRM-32113) and Pseudomonas fluorescens (BRM-32111), combined with silicon (Si) fertilization, to reduce lesion size and the area under the disease progress curve (AUDPC), as well as to minimize the negative effects on gas exchange, chlorophyll a fluorescence, chlorophyll content and the activity of oxidative stress enzymes. The experiment used a completely randomized design with four replications and seven treatments. Compared with plants only fertilized with Si, plants fertilized with Si and treated with BRM-32113 showed reductions of 22% in scald lesion expansion and 37% in AUDPC, a 27% increase in the rate of CO2 assimilation (A), a 33% decrease in the internal CO2 concentration (Ci), and a 40% increase in ascorbate peroxidase activity. It was therefore concluded that the combination of BRM-32113 with Si fertilization reduces the severity of leaf scald, protecting the photosynthetic apparatus, thus representing a sustainable method of reducing the loss of income caused by leaf scald in rice.  aBurkholderia pyrrocinia  aChlorophyll  aMonographella albescens  aRhizosphere bacteria  aRice  aScald diseases  aArroz  aClorofila  aOryza sativa  aPseudomonas Fluorescens  aRizosfera  aGas-exchange1 aCASTRO, G. L. S.1 aSILVA JUNIOR, D. D.1 aPINHEIRO, H. A.1 aFILIPPI, M. C. C.1 aSILVA, G. B.  tPlant Pathologygv. 66, n. 9, p. 1487-1495, Dec. 2017.