Characterization of cell death induced by NbBPS1 silencing in Nicotiana benthamiana

Functional characterization of plant agrichemical transporters provided an opportunity to discover molecules that have a high mobility in plants and have the potential to increase the amount of pesticides reaching damage sites. Agrobacterium-mediated transient expression in tobacco is simple and fast, and its protein expression efficiency is high; this system is generally used to mediate heterologous gene expression. In this article, transient expression of tobacco nicotine uptake permease (NtNUP1) and rice polyamine uptake transporter 1 (OsPUT1) in Nicotiana benthamiana was performed to investigate whether this system is useful as a platform for studying the interactions between plant transporters and pesticides. The results showed that NtNUP1 increases nicotine uptake in N. benthamiana foliar discs and protoplasts, indicating that this transient gene expression system is feasible for studying gene function. Moreover, yeast expression of OsPUT1 apparently increases methomyl uptake. Overall, this method of constructing a transient gene expression system is useful for improving the efficiency of analyzing the functions of plant heterologous transporter-encoding genes and revealed that this system can be further used to study the functions of transporters and pesticides, especially their interactions.

Download Full-text

Genome-Wide Identification and Characterization of Long Noncoding RNAs Involved in Chinese Wheat Mosaic Virus Infection of Nicotiana benthamiana

Biology ◽

10.3390/biology10030232 ◽

2021 ◽

Vol 10 (3) ◽

pp. 232

Author(s):

Weiran Zheng ◽

Haichao Hu ◽

Qisen Lu ◽

Peng Jin ◽

Linna Cai ◽

...

Keyword(s):

Virus Infection ◽

Mosaic Virus ◽

Nicotiana Benthamiana ◽

Noncoding Rnas ◽

Long Noncoding Rnas ◽

Differentially Expressed ◽

Genome Wide ◽

Chinese Wheat

Recent studies have shown that a large number of long noncoding RNAs (lncRNAs) can regulate various biological processes in animals and plants. Although lncRNAs have been identified in many plants, they have not been reported in the model plant Nicotiana benthamiana. Particularly, the role of lncRNAs in plant virus infection remains unknown. In this study, we identified lncRNAs in N. benthamiana response to Chinese wheat mosaic virus (CWMV) infection by RNA sequencing. A total of 1175 lncRNAs, including 65 differentially expressed lncRNAs, were identified during CWMV infection. We then analyzed the functions of some of these differentially expressed lncRNAs. Interestingly, one differentially expressed lncRNA, XLOC_006393, was found to participate in CWMV infection as a precursor to microRNAs in N. benthamiana. These results suggest that lncRNAs play an important role in the regulatory network of N. benthamiana in response to CWMV infection.

Download Full-text

Comparative transient expression analyses on two conserved effectors of Colletotrichum orbiculare reveal their distinct cell death‐inducing activities between Nicotiana benthamiana and melon

Molecular Plant Pathology ◽

10.1111/mpp.13078 ◽

2021 ◽

Author(s):

Jinlian Chen ◽

Yoshihiro Inoue ◽

Naoyoshi Kumakura ◽

Kazuyuki Mise ◽

Ken Shirasu ◽

...

Keyword(s):

Cell Death ◽

Transient Expression ◽

Nicotiana Benthamiana ◽

Colletotrichum Orbiculare ◽

Distinct Cell

Download Full-text

Galectin-3 is modulated in pancreatic cancer cells under hypoxia and nutrient deprivation

Biological Chemistry ◽

10.1515/hsz-2019-0413 ◽

2020 ◽

Vol 401 (10) ◽

pp. 1153-1165 ◽

Cited By ~ 2

Author(s):

Antônio F. da Silva Filho ◽

Lucas B. Tavares ◽

Maira G. R. Pitta ◽

Eduardo I. C. Beltrão ◽

Moacyr J. B. M. Rêgo

Keyword(s):

Pancreatic Cancer ◽

Cell Death ◽

Mrna Expression ◽

Cancer Cells ◽

Ductal Adenocarcinoma ◽

Reverse Transcription Pcr ◽

Pancreatic Cancer Cells ◽

Through Flow ◽

Galectin 3

AbstractPancreatic ductal adenocarcinoma is one of the most aggressive tumors with a microenvironment marked by hypoxia and starvation. Galectin-3 has been evaluated in solid tumors and seems to present both pro/anti-tumor effects. So, this study aims to characterize the expression of Galectin-3 from pancreatic tumor cells and analyze its influence for cell survive and motility in mimetic microenvironment. For this, cell cycle and cell death were accessed through flow cytometry. Characterization of inside and outside Galectin-3 was performed through Real-Time Quantitative Reverse Transcription PCR (qRT-PCR), immunofluorescence, Western blot, and ELISA. Consequences of Galectin-3 extracellular inhibition were investigated using cell death and scratch assays. PANC-1 showed increased Galectin-3 mRNA expression when cultivated in hypoxia for 24 and 48 h. After 24 h in simultaneously hypoxic/deprived incubation, PANC-1 shows increased Galectin-3 protein and secreted levels. For Mia PaCa-2, cultivation in deprivation was determinant for the increasing in Galectin-3 mRNA expression. When cultivated in simultaneously hypoxic/deprived condition, Mia PaCa-2 also presented increasing for the Galectin-3 secreted levels. Treatment of PANC-1 cells with lactose increased the death rate when cells were incubated simultaneously hypoxic/deprived condition. Therefore, it is possible to conclude that the microenvironmental conditions modulate the Galectin-3 expression on the transcriptional and translational levels for pancreatic cancer cells.

Download Full-text

Petunia vein banding virus: Characterization of a New Tymovirus from Petunia × hybrida

Plant Disease ◽

10.1094/pdis.2000.84.7.739 ◽

2000 ◽

Vol 84 (7) ◽

pp. 739-742 ◽

Cited By ~ 13

Author(s):

M. A. V. Alexandre ◽

L. M. L. Duarte ◽

E. B. Rivas ◽

C. M. Chagas ◽

M. M. Barradas ◽

...

Keyword(s):

Nicotiana Benthamiana ◽

Petunia Hybrida ◽

Amino Acid Sequence Identity ◽

Rio Grande Do Sul ◽

Cytopathic Effects ◽

Sequence Identity ◽

Andean Potato ◽

Plant Families ◽

Nicandra Physalodes

Petunia plants from a nursery in the State of Rio Grande do Sul, Brazil, showed pronounced vein banding and contained isometric particles with diameters of approximately 45 and 30 nm. The larger ones apparently represent a caulimovirus, while the smaller ones, which included both empty shells and full particles, were identified as those of a new tymovirus for which we propose the name Petunia vein banding virus (PetVBV). Originally, PetVBV was transmitted only with difficulty to healthy petunia plants. However, from an experimentally infected petu-nia, it was later readily transmitted also to Nicotiana benthamiana and Nicandra physalodes, but not to other species in the Solanaceae or other plant families. It produces cytopathic effects typical for tymovirus infections. Its coat protein shows approximately 65% amino acid sequence identity with those of Eggplant mosaic and Andean potato latent viruses, to which it is also serologically more closely related than to any other tymoviruses.

Download Full-text