Joao Paulo Rodrigues Marques

12 Questions 41 Answers 0 Followers

Questions related from Joao Paulo Rodrigues Marques

How detect H2O2 in TEM sections?

I would like to know if I it is possible detect H2O2 in Transmission electron microscopy through DAB and osmium tetroxide reaction. Doe anyone know if it is a possible to detect hydrogen peroxide...

01 March 2022 443 8 View

What determine the number of ovules in a pod (legume fruit)?

The number of ovules is associated to the number of seeds. There is any nutritional or genetic effect in determining the number of ovules in the ovary that culminate to the number of seeds in the...

26 February 2020 9,209 4 View

What is the best Cryofixation method for plant tissues?

Dear Colleges, I was wondering about the best method to prepare plant tissues for cryosectioning avoiding traditional chemical fixative methods. I hear about cold isopenthane method as on of...

21 December 2019 6,896 0 View

Does gold coated affect the EDX analysis?

I have some stubs of plant tissues that are gold-coated. I was wondering if there is a possibility to do EDS analysis. Does the energy of the K or L edge of gold affect the analysis of the lighter...

02 February 2019 3,696 6 View

Nutrient factors in the rhizosphere are associated with lateral root development?

I am working on lateral root (LR) formation and I want to understand the relationship the phosphorus in the rhizosphere as a signal to elicit the (LR) development. Does anyone know if the...

11 September 2018 7,966 3 View

Does anyone can suggest a software to analyze vascular distribution in plant leaves?

We are studying two plant cultivars and we believe that the vascular distribution can have an effect in restrain the fungus between the vascular bundles. So, how to quantify or qualify the...

06 April 2018 8,241 2 View

During a plant-pathogen defense response what happens first the cell expansion or division?

I was analyzing several examples of plant pathogen interaction (pathosystems) and I was wondering if cell expansion comes first or second to cell division. Of course, I must considered that...

10 November 2017 8,641 3 View

Fungal elicitors can interfere in plant transcription factors?

I will start a work on plant-pathogen interaction and I want to know if biotrophic fungi can secret elicitors in order to modify the transcription factors in the host. I am reading some papers...

20 June 2016 1,817 5 View

What is the best mounting medium to study plant cell on real-time?

I am trying to study living plant cell on fluorescence microscopy. Should I use PBSor sucrose? Do you have some suggestions? Thanks

09 May 2016 5,968 3 View

Does anybody know about papers that show the ultrastructural interface of BIC (Biotrophical Interfacial Complex) in biotrophic fungi pathogens?

I am studing the ultrastructural interface between one biotrophic fungi and their plant host. I made transmission electron microcopy and I saw a physical interaction between the intracellular...

22 June 2015 6,295 2 View

How are shoot apical meristem organized in Monocotyledons?

I am studying the shoot apical meristem (SAM) in one monocotyledons and I don't understand very well how the cytohistological zonation described in dicotyledons could be applied to...

05 March 2015 6,428 2 View

How does the high temperature can affect plant sporogenesis and gametogenesis

I would like to promote a discuss if the recent global climate changes can influences microsporogenesis, microgamatogenesis, megasporogenesis and megagametogenesis. I was wondering, based on the...

01 January 1970 1,136 4 View