Hi

It seem similar. Maybe these papers could help:

http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S2007-42982015000300020

https://www.researchgate.net/publication/283711047_In_vitro_phytotoxicity_of_culture_filtrates_of_Fusarium_oxysporum_f_sp_vanillae_in_Vanilla_planifolia_Jacks

Good luck

Article In vitro phytotoxicity of culture filtrates of Fusarium oxys...

Dear Cecilia Lutz

It Could be Fusarium, look like systemic diseases but what about any other foliar symptoms or inside the basal stem. Do microscopic examination conducted on the effects of sticking black on the hand and fingers in the third picture. (Usually to differentiate between fungal or bacterial with smell and ooze accompanied with bacterial diseases)

Most diseases come from conditions such as excess water, insufficient drainage, heavy mulch, overpollination, and too much shade favor disease development. Vanilla is susceptible to many fungal and viral diseases. Root and Stem Rot (Fusarium Oxysporum F. SP. Vanillae), Sclerotium, Rust (Uromyces SP.),Black Rot (Phytophtora SP.)and Anthracnose (Colletotrichum SP.) cause rots of root, stem, leaf, bean, and shoot apex. These diseases can be controlled by spraying Bordeaux mixture (1%), carbendazim (0.2%) and copper oxychloride (0.2%).

Pls. find the attached files

http://www.promedmail.org/post/4300124  pls. have a look to all link in it

https://www.plantvillage.org/en/topics/vanilla/diseases_and_pests_description_uses_propagation

http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S2007-42982015000300020

http://intisari-sari.blogspot.com/2011/05/pest-and-disease-control-in-vanilla.html

http://apsjournals.apsnet.org/doi/full/10.1094/PDIS-08-15-0896-PDN

http://www.scielo.org.mx/scielo.php?script=sci_arttext&pid=S2007-42982015000300020

http://www.kissankerala.net:8080/KISSAN-CHDSS/English/Vanilla/Disease/5.htm

http://www.spices.res.in/pdf/package/vanilla.pdf

https://en.wikipedia.org/wiki/Vanilla

http://www.orchidsasia.com/vanilladisease01.htm

http://onlinelibrary.wiley.com/doi/10.1002/9781444329353.ch2/summary

https://francesorganicbeautysecrets.com/2015/10/29/10-major-diseases-could-be-cured-with-this-plant-vanilla/

https://www.researchgate.net/publication/283711047_In_vitro_phytotoxicity_of_culture_filtrates_of_Fusarium_oxysporum_f_sp_vanillae_in_Vanilla_planifolia_Jacks

http://www.celkau.in/Crops/Spices/Vanilla/diseases.aspx

http://wlv.openrepository.com/wlv/handle/2436/15398

Hoping this will be helpful,

Regards

Prof. Houda Kawas

Article In vitro phytotoxicity of culture filtrates of Fusarium oxys...

 Hi.

This symptom is very common in V. planifolia in Mexico. This occurs during the coldest period of the year, before beginning the flowering. According to some researchers it is not a disease but one physiological response. However, producers in Costa Rica mention that this is not present in their crops. Here in Mexico, researchers believe that it is not a serious injury because only the apical part dies.

As you will see, it is a good research topic.

Hi: You can make a culture from it by keep it on WA or PDA medium for 2-3 days and you can see the spores under microscope. This is the best way to confirm what is the symptom causing by.

Hi Cecilia, please see:

http://revistamexicanademicologia.org/wp-content/uploads/2012/05/Vol.-35-páginas-23-34.pdf

http://repositoriotec.tec.ac.cr/bitstream/handle/2238/2934/Informe_Final.pdf?sequence=1&isAllowed=y

http://botanicalsciences.com.mx/index.php/botanicalSciences/article/viewFile/142/pdf_146

Hi Cecilia

I think, you must check in media and see the colony, and you get the result through 1-3 days

I agree with Dr.Oadi about the media

Thank you all for the comments and suggestions! They were really helpful!!!!!

Regards

Cecilia

You most welcome

Houda