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Plants Resistant to Fungal Disease

University of California, Riverside researcher Prof. Hailing Jin and her colleagues have developed plants that are resistant to Botrytis cineria and Verticillium dahlia. These plants are genetically engineered to silence fungal pathogens that transfer “virulent” small RNA effectors to the plant that cause disease.  This has led to the development of plants that are resistant to Botrytis cineria and Verticillium dahlia. Fig. 1 shows fruits (bottom) with dramatic reductions in gray mold disease. Gray mold disease is caused by Botrytis cineria. The bottom fruits were sprayed with small RNA (sRNA) against Botrytis cineria pathogens dicer-like 1 & 2 (BcDCL). The top fruits were sprayed with water and this conferred no protection against gray mold disease. Immunity to pathogens may be genetically engineered into plants to express BcDCL-1 and BcDCL-2.

Early Diagnosis and Treatment for Citrus Greening Disease

University of California, Riverside researcher, Prof. Hailing Jin, has shown that several citrus small RNAs are induced upon infection by Candidatius Liberibacter asiaticus (Las).  These miRNAs and siRNAs would enable the early diagnosis of HLB in citrus trees and nursery stocks.  In addition to the identification of the miRNA biomarker, Prof. Jin also discovered that treating Las infected trees with phosphorus oxyanion improved fruit production.  These studies of the improvement in yield in HLB infected citrus was demonstrated in a 3-year field trial in Florida.  Fig. 1 shows the relative expression levels of miRNA399 in HLB infected citrus. Infected trees express high levels of miRNA 399. Fig. 2 shows leaves from trees that did or did not receive phosphorus oxyanion treatment over a one year period. Leaves treated with phosphorus oxyanion are healthier than leaves from untreated trees.

ABSTRACT: Platinum/Palladium Fuel Cell Catalyst

Brief description not available