Keiko Torii joins UT Austin faculty

Plant biologist Keiko Torii joins UT Austin faculty

Photo Credit: Courtesy of Dr. Keiko Torii | Daily Texan Staff

Published on April 25, 2019 at 11:49 pm


Plant biologist Keiko Torii will be joining UT’s molecular bioscience department this coming fall and continuing her research into stomata and how plant cells grow. 

Torii is a part of the Howard Hughes Medical Institute Investigator Program, which supports researchers known for their scientific discoveries, and has been studying the development and patterning of stomata. Her research led to the discovery that plants use peptide hormones as signals in order to control their growth and environmental responses. Peptide hormones are chemical signals that affect the endocrine system in humans and animals.

“Until the early 1990s, scientists assumed that plants must not have peptide hormones like animals do,” Torii said in an email. “My discovery was one of the earliest suggesting that plants, like animals, make use of peptide hormones.” 

Torii made her discovery while doing postdoctoral work in Japan. After identifying the gene responsible for a plant’s size, she cloned a causal gene and saw how similar it was to an animal hormone receptor.



I started this blog of Plant Stomata Encyclopedia without any intention of publishing a book. I am convinced that this Encyclopedia is a never ending story. There will always be researchers publishing new data. That is the reason why I opted for a website (blog), where we (and our followers) are able to complete the Encyclopedia until the end of times.

The day will come that I will hand over the administration of the blog to one or more younger colleagues (fellow stomata researchers). In the meanwhile, I hope that many researchers will be able to contribute to this Encyclopedia by sending missing abstracts (mentioned in our bibliographical lists). Completing such an Encyclopedia is not a task for one single expert.

Prof. Dr. Willem VAN COTTHEM (Ghent University, Belgium)

References and abstracts of publications on plant stomata

We welcome all references and abstracts of publications on plant stomata

Are you doing research work on plant stomata and publishing your findings ? Are you looking for a wider readership ?  Would you like to share your publications with interested readers all over the world ? Well, we have some great news for you: almost 250.000 times professionals have already visited our blog and on a regular basis a couple of hundred experts on stomata are viewing our updates.

We are excited offering a global forum where experts on stomata can share knowledge and learnings.  We are accepting to publish all bibliographical references with their abstracts on plant stomata. Did we miss some of your publications ? So sorry ! Please do not hesitate to complete our Encyclopedia. Your posts should be directly or indirectly related to plant stomata. Matching images (photos, screen shots, videos) are most welcome.  Posts that meet the above guidelines should be submitted via email: ‘’ with the subject ‘Blog Post Submission to Plant Stomata Encyclopedia’.

Up to now we did not succeed finding the abstract (or summary) of a number of publications.  You can find their reference in our bibliographical lists. Should you possess some of these missing abstracts, please send them to our email address.  Sincere thanks for your valuable contribution.

We look forward to receiving your submissions.

Prof. Dr. Willem VAN COTTHEM (Ghent University, Belgium)



On Nov. 30, 2018, we launched this project and today we registered our first pioneer: Prof. Dr. Belhadj Safia (University of Djelfa, Algeria).

Please find the updated information concerning this project below:



─ initiated by Prof. Dr. Willem VAN COTTHEM, Ghent University, Belgium

Administrator of “Plant Stomata Encyclopedia”


We suppose that scientists interested in the study of plant stomata would like to know who are the colleagues with similar interests and more specifically in which study fields (domains, categories) these interests are developed.


  1. To create a global list of scientists interested in the study of stomata.
  2. To get an overview of the specific domains in which those scientists are interested.
  3. To give an overview of the groups of experts in these specific domains.


For the classification of the bibliographical references in our PLANT STOMATA ENCYCLOPEDIA we have used up to now a number of categories.  We would like to know in which of these categories you are particularly interested. May we invite you to copy and fill out the submission form below and send a copy of it to ?

Thank you in advance for your kind cooperation.


  1. Expectations

We hope to be enabled to collect a large number of submission forms to get a representative view on “who is who” in the world of plant stomata, thus facilitating contacts between colleagues interested in the same domains.

  1. Time schedule

We want to use the submitted lists step by step to publish an overview on the groups of experts. This overview will figure as one of the categories on our blog. It will be updated gradually and can be consulted permanently.


To be copied and filled out:






Please tick which categories you are interested in:






















OTHER CATEGORIES (Please specify):

Please send this form to




Today, we are still looking for the abstracts of a number of articles.  It would be nice if you could help us to get some of them.

We would be extremely thankful if you could send them to:



Baranova, M. (1981) – On the laterocytic type of stomatal apparatus in flowering plants. – Bot. Zhurn. 66: 179–186 (In Russian) – Google Scholar – (Article not found)

Baranova M. A.. (1992) – The epidermal structure and systematic position of Austrobaileyaceae. Botanicheskii Zhurnal (Leningrad) 77: 1-17. (No abstract found – Who can send us one ?)

Doyle J. A., Donoghue M. J. (1986) – Seed plant phylogeny and the origin of angiosperms: an experimental cladistic approach. – Bot. Rev. 52. 321-431. (Article not found)

Prabhakar M., Ramayya N., Leelavathi P. (1984) – Structure and distribution of epidermal elements in the angiosperms. Ⅰ. Epidermal cell complex. – Geophytology, 14:55-68 – (Article not found)

Ziegler E., Farquhar G. D., Cowan I. R. (1987) – Stomatal Funcion – Stanford University Press – (Article not found)



Pressel S., Renzaglia K. S., Duckett, J. G. (2011) – Hornworts: a new look at stomatal evolution. – In: XVIII International Botanical Congress, Melbourne, abstract book, pp. 237. – (No abstract found – Who can send us one ?)



Boudier P. (1988) – Différenciation structurale de l’èpiderme du sporogone chez Sphagnum fimbriatum Wilson. – Annales des Sciences Naturelles Botanique, Paris 1986-1987, vol. 8, no3-4, pp. 143-156. – (No abstract found – Who can send us one ?)

Duckett J. G.Ligrone R. (2004) – There are many ways of making water-conducting cells but what about stomata? – Field Bryology 823233. – (No abstract found – Who can send us one ?)

Kuhlbrodt H. (1922) – Über die phylogenetische entwicklung des Spaltȍffnungsapparates am Sporophyten der Moose. – Beiträge Allgemeine Botanik, 2: 363402. – (No abstract found – Who can send us one ?)



Bobrov A. E. (1962) – Comparative studies of the epidermis and the stomates of the leaves of Cycadaceae. – Bot. Zhurn. 47: 808–820. (In Russian) – Google Scholar – (Article not found)

Karzel R. (1908) – Die Verholzung der Spaltöffnungen bei Cycadeen. – Wiesner-Festschrift (Article not found).

Shapiro S. (1949) – The presence of stomata on the nucellus of Zamia floridana – (Abstract) – Amer. J. Bot. 36: 803 – (Article not found)



AbdulRahaman A. A., Oladele F. A. (2005) – Stomata, trichomes, and epidermal cells as diagnostic features in six species of genus Ocimum L. (Lamiaceae). – Niger. J. Bot. 18, 214-222. (No abstract found – Who can send us one ?)

Abubakar B. Y., Yunusa A. I. (1998) – Epidermal structure and stomatal ontogeny as an aid to the taxonomic identification of some species of Acacia (Leguminosae – Mimosoideae) from Nigeria. – Niger. J. Bot. 11, 117-123. (No abstract found – Who can send us one ?)

Adegbite A. K. (1995) – Leaf epidermal studies in three of Nigerian species of Aspilia (Heliantheae – Asteraceae) and two hybrids. Niger. J. Bot. 18, 25-33. (No abstract found – Who can send us one ?)

Ahmad K. J. (1979) – Taxonomic Significance of Epidermal Characters in Acanthaceae. – In  “Progress in Plant Research” (Ed. – Khoshoo, T. N. and Nair, P. K. K.) Silver Publication, National Botanical Research Institute, Lucknow, India. 1: 135 – 160. (No abstract found – Who can send us one ?)

Ahmad K. J. (1979) – Stomatal features of Acanthaceae. In Structure, Function and Ecology of Stomata, pp.43-60. Ed. DN Sen (Bishen Sing Mahendra Pal Sing; Dehradun, India). (No abstract found – Who can send us one ?).

Ahmad K., Khan M. A., Ahmad M., Zafar M. Arshad M., Ahmad F. (2009) – Taxonomic diversity of stomata in dicot flora of a district tank (N.W.F.P.) in Pakistan –

Arraes M. A. B. (1970) – Significacao estatestica do indice estomatica em especies do genera Cassia L. – Boletim Cearense de Agronomia, Brazil 11: 31-38 – (Article not found)

Ayodele A. E. (2000) – Foliar epidermal characteristics of the genus Plumbago L. (Plumbaginaceae) in Nigeria – Nig. J. Sci. 34(1): 9-13. (Article not found)

Baas P. (1985) – Comparative leaf anatomy of Pernettya Gaud. (Ericaceae) – Bot. Jahrb. Syst.105: 481–495 – Google Scholar – c.50 specimens. hairs, stomata, hypodermis, sclerenchyma. Comparison with Gaultheria. Ericaceae **, Ecological anatomy, Leaf anatomy (PMBD, 185800524). (No abstract found).

Baderinwa A., Moraviniyo J. A. (2002) – Comparative study of foliar epidermis in three species of Corchorus L. – Nigerian Journal of Botany 15: 1-6. – (No abstract found – Who can send us one ?)

Banerjee G., Mukherjee A. (2001) – Pharmacognostic studies on Portulaca oleracea L. I. Leaf. In (eds) J. K. Maheshwari and A. P. Jain Recent researches in plant anatomy and morphhology, Scientific Publishers (India), Jodhpur, pp. 69-78. (No abstract found – Who can send us one ?t)

Baranova M. (1969) – Comparative stomatographic investigations in the genus Manglietia B1. – Bot. Zhurn. 54: 1952–1964 (In Russian) – Google Scholar – (Article not found)

Baranova M. (1975) – Classification of ontogenetic types of stomates (on the appearance of the publication of Fryns-Claessens and van Cotthem) – Bot. Zhurn. 60: 280–297. (In Russian.) – Google Scholar – (Article not found)

Baranova M. (1975) – Stomatographic investigations in the family Flagellariaceae. Bot Zhurn. –60: 1690–1697. (In Russian.)  – Google Scholar – – (Article not found)

Baranova M. A. (1980) – Comparative stomatographic investigations in the families Buxaceae and Simmondsiaceae. – Pages 68–75 in S. G. Zhilin (ed.), Systematics and evolution of higher plants. Soviet Sciences Press, Leningrad. – Google Scholar – (Article not found)

Baranova M. A. (1985) – Classification of the morphological types of stomates – Bot. Zhurn. 70: 1585–1595. (In Russian.) – Google Scholar– (Article not found)

Baranova M. A. (1986) – Comparative stomatographic investigations in the family Chloranthaceae. – Pages 12–19 in Problems of Paleobotany, Soviet Sciences Press, Leningrad. (In Russian) – Google Scholar – (Article not found)

Baranova M. A. (1987) – On the stephanocytic type of stomatal apparatus in flowering plants – Bot. Zhurn. 72: 59–62. (In Russian.) – Google Scholar– (Article not found)

Baranova M. A. (1987) – O stefanotsitnom tipe ustichnogo apparata u tsvetkovykh. – Botanicheskii Zhurnal SSSR 7259-62 (in Russian) – (Article not found)

Baranova M. A. (1987) – Historical development of the present classification of morphological types of stomates – Bot. Rev. 53: 53–79 – CrossRef Google Scholar– (Article not found)

Baranova M. A., Ostroumova T. A. (1987) – Stomatal characters in systematics. Pages 173–192 in M. G. Pimenov (ed.), Review of science and technology. Botany, Vol. 6. (In Russian) – Google Scholar– (Article not found)

Bessis J., Guyot M. (1973) – Les types stomatiques chez les Solanacées – C. R. 96ème Congr. natl. Soc. Sav. Toulouse (1971) T. V: 289-298 – (Article not found)

Bessis J., Guyot M. (1979) – An attempt to use stomatal characters in systematic and phylogenetic studies of the Solanaceae. Biology and taxonomy of the Solanaceae. – Linn. Soc. Symposium Series 7 – Google Scholar – (Article not found)

Bhatia R. Y. P., Prabhakar M., Rao T. S. (1988) – Dermotype studies on different cultivars of Beedi tobacco in relation to forensic science. – J. Indian Acad. For Sci;, 26: 1-11. (No abstract found – Who can send us one ?)

Bhatia R. Y. P., Prabhakar M., Verma H. K. (1986) – Forensic studies of poisonous and medicinal plants-Ⅱ Calatropis gigantia R. Br. (Asclepiadaceae). – J. Indian Acad. For Sci., 25: 15-22. (No abstract found – Who can send us one ?)

Bhatt D. C. (2001) – Structure and development of stomata in some Sapotaceae. – J. Econ. Taxon. Bot., add. ser. No. 19. 93-97. 581.4 REC. – 6 spp. Achras, Chryzophyllum, Madhuca, Mimusops, Manilkara, Sideroxylon. (No abstract found – Who can send us one ?)

Bora N., Baruah P. (1979) – Contiguous stomata in Desmodium Desv. (Papilionaceae). Current Sci. 48: 27-28. (No abstract found – Who can send us one ?).

Bravo S. J., Grau A. (1992) – Variaciones de la densidad estomática en poblaciones de Alnus acuminata en un gradiente altitudinal – Lilloa38: 39-45 (No abstract found)

Caspari H. (1883) – Beiträge zur Kenntnis des Hautgewebes der Cacteen – Zeitschr. für Naturwiss. 56: 30-80 – (Article not found)

Chappet A. (1969) – L’appareil stomatique de Vicia faba L. – D.U.E.S., Fac. Dijon, France (Article not found)

Chaudhary N. Y., Imran M. (1997) – Comparative study of stomata in some members of Malvaceae and Euphorbiaceae. – Pak. J. Pl. Sci., 3(1): 33- 45. (No abstract found – Who can send us one ?).

Chen Z. l. (1996) – The morphology and anatomy of Sonneratia Linn. in China. – J. Trop. Subtropical Bot. 4: 18-24. (Article not found)

Choudhury S. R., Anand P. S. B., Reddy G. P., Sahoo N., Verma H. N. (2002) – Stomatal distribution, leaf anatomy and leaf age dependent photosynthesis behaviour of water chestnut (Trapa bispinosa) leaves.

Cole D. F., Dobrenz A. K. (1970) – Stomate density of alfalfa (Medicago sativa L.) – Crop Sci. 10: 61-63 – (Study: Vazzana C, Puliga S, Bochicchio A, Raschi A. 1988 Study of the stomatal density in an alfalfa (Medicago sativa L. )ecotype. Riv. agron. 22. 127-32.) – (Article not found)

Cutler D. F. (1969) – Cuticular markings and other epidermal features in aloe leaves. – Notes Jodrell Laboratory 6: 21- 27 – (Article not found)
Das S., Ghose M. (1997) – Development of stomata and leaf hairs in some mangroves. Phytomorphology 47, 389–394. – Euph:Excoecaria, Sterc:Heritiera, Lyth:Sonneratia, Rhiz:Bruguiera, Rhizophora. Line drawings. (No abstract found – Who can send us one ?)
Décamps O. (1985) – Variabilité de l’appareil stomatique des Renonculacées – Bull. Hist. Nat. Toulouse 121: 137-140 (Article not found)

New References

Today I got an opportunity of adding an impressive number of new references to our bibliographic lists of:




As soon as possible I will try to add the abstracts of these publications to our “PLANT STOMATA ENCYCLOPEDIA”.

i am gratefully appreciating all helping hands to complete this enormous survey of all publications on plant stomata.  In particular, I am looking for all abstracts that are not available for me up to now.  Please see my bibliographic lists in the different categories and, wherever possible, be so kind to send me some of those “absent” abstracts.

With my warm thanks,



Sincere thanks to Dr. Mabrouk A. El-Sharkawy


We wish to express our warmest thanks to Dr. Mabrouk A. El-Sharkawy who has sent a series of submission forms about his publications on stomata.  One can find these references and abstracts below.  They form a very valuable contribution to our Plant Stomata Encyclopedia.- Willem


Dr. El-Sharkawy’s reply:

Dear Dr. Professor Willem,

Have a great day, Thank you very much for your prompt response to the several submissions on stomata in cassava and other plant species  which I posted to your link: Encyclopedia on stomata. I appreciated your note and the nice photos you picked up from the internet that added more attraction to the articles I sent. My encounter with your link was accidental last night while I was searching for some information on gas exchange and particularly on stomatal conductance in crops. How  lucky I was to have found your link,  which is very informative for readers, students, scientists,  botanists, and researchers in plant-environment relation. My warm congratulations for a great job. // Attached a recently published article for your files.

Best regards,


Retired senior scientist, Centro Internacional de Agricultura Tropical (CIAT),

Cali, Colombia, S. A.”


Thanks to colleagues sending “Submission Forms”



My sincere thanks go to colleagues sending our “Submission Forms” (left column) with interesting references and abstracts of their work on stomata.

The latest in the row was Eliáš Pavol of the Slovak University of Agriculture in Nitra, who sent 2 references. Thanks Eliáš !

I am looking forward for messages filling the gaps: missing abstracts mentioned in our bibliographical lists.  It would be nice if you could help me to complete our encyclopedia on plant stomata.  If you like to see your name mentioned in the list of our collaborators, please let me know.