Soil-borne plant pathogens represent a serious threat that undermines commercial walnut(Juglans regia)production *** gall,caused by Agrobacterium tumefaciens,and Phytophthora root and crown rots,caused by various Phyt...
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Soil-borne plant pathogens represent a serious threat that undermines commercial walnut(Juglans regia)production *** gall,caused by Agrobacterium tumefaciens,and Phytophthora root and crown rots,caused by various Phytophthora spp.,are among the most devastating walnut soil-borne diseases.A recognized strategy to combat soil-borne diseases is adoption of resistant ***,resistance to ***,***,and *** is mapped in the genome of Juglans microcarpa,a North American wild relative of cultivated ***-sib *** mother trees DJUG 31.01 and DJUG 31.09 were crossed with *** ***,producing 353 and 400 hybrids,*** propagated hybrids were genotyped by sequencing to construct genetic maps for the two populations and challenged with the three *** to each of the three pathogens was mapped as a major QTL on the long arm of *** chromosome 4D and was associated with the same haplotype,designated as haplotype b,raising the possibility that the two mother trees were heterozygous for a single Mendelian gene conferring resistance to all three *** deployment of this haplotype in rootstock breeding will facilitate breeding of a walnut rootstock resistant to both crown gall and Phytophthora root and crown rots.
Parotid gland adenocarcinoma is commonly a tumor of low malignancy and low incidence worldwide. The reported case shows the rapid progression of this tumor in an elderly patient and infrequent effects, such as a prese...
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Parotid gland adenocarcinoma is commonly a tumor of low malignancy and low incidence worldwide. The reported case shows the rapid progression of this tumor in an elderly patient and infrequent effects, such as a presentation of facial edema not commonly described in the medical literature. Patient was admitted to hospital in November 2019 with secretion and partial hearing loss in the right ear and infiltrative and stone lesion with initial skin ulceration in the right cervical region. After 42 days, he returned and was admitted to the intensive care unit with significant swelling of the face, hardened and hyperemic neck, difficulty in speech and inability to open the eye. He presented changes in the mobility of the speech and hearing organs, reduced laryngeal mobility, vocal changes, speech with altered articulation and severe oropharyngeal dysphagia with risk of bronchoaspiration. The patient was diagnosed in September 2019 with a parotid tumor (salivary gland adenocarcinoma T4). The medical team requested computed tomography, computed tomography angiography of the chest and cervical vessels and computed tomography of the neck, in addition to evaluation by the head and neck surgery service and general surgery. After analyzing the results, the medical team suggested a hypothesis of tumor invasion that could result in obstruction of local lymphatic drainage, something unusual in the evolution of this type of tumor. In addition, it was not possible to adhere to radiotherapy treatment due to the extent of the lesion and there was also no confirmation of metastases. The reported case shows us that parotid gland adenocarcinoma, when diagnosed in an advanced stage, can limit the approach to treatment. It was chosen in agreement with the family to proceed with palliative care without invasive measures. Palliative care may be the best option for cases like this, bringing some comfort to the patient and his family.
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