02268naa a2200361 a 450000100080000000500110000800800410001902400360006010000210009624501560011726000090027352012010028265000160148365000160149965000090151565000190152465000150154365000310155865000220158965000100161165000240162165000180164565300170166365300310168070000250171170000200173670000160175670000190177270000190179170000210181070000200183177300550185121413012023-03-27       2021    bl uuuu     u00u1 u    #d7 a10.1007/s40858-021-00465-x2DOI1 aCAMPOS, L. J. M.  aPhysiological and biophysical alterations in maize plants caused by Colletotrichum graminicola infection verified by OJIP study.h[electronic resource]  c2021  aAnthracnose caused by Colletotrichum graminicola (Ces.) Wils is among the most aggressive maize diseases worldwide, considerably hindering crop productivity. To investigate the responses underlying the host-pathogen interaction involved in anthracnose infection, we conducted two feld experiments in some of the main grain producing areas of the State of Tocantins, in Brazil. Four maize hybrids (with diferential tolerance to C. graminicola) were sown in February and March, 2017. Chlorophyll fuorescence measures were performed according to the OJIP protocol; additionally, SPAD readings were conducted and productivity components were assessed. Inoculation with the fungus spore suspension afected the response curve of the chlorophyll fuorescence transient, SPAD index, and productivity components. Anthracnose stalk rot caused 20-25% reduction in grain weight, 6?8% reduction in maize ear size, and 20-23% reduction in ear weight. Furthermore, plants experiencing C. graminicola rot showed reduced SPAD index and a 24-34% reduction in the activity indicator of PSII (PITotal). These changes in the photosynthetic apparatus were successfully observed via chlorophyll fuorescence measurements.  aAnthracnose  aChlorophyll  aCorn  aPhotosystem II  aAntracnose  aColletotrichum Graminicola  aDoença de Planta  aMilho  aPerda da Produção  aProdutividade  aFotossistema  aFuorescência da clorofila1 aALMEIDA, R. E. M. de1 aSILVA, D. D. da1 aCOTA, L. V.1 aNAOE, A. M. L.1 aPELUZIO, J. M.1 aBERNARDES, F. P.1 aCOSTA, R. V. da  tTropical Plant Pathologygv. 46, p. 674-683, 2021.