Frankia and Actinorhizal Plants

1. Front Matter

   Pages i-xii

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2. Studies of an effective strain of Frankia from Allocasuarina lehmanniana of the Casuarinaceae

   • Zhang Zhongze, John G. Torrey

   Pages 1-16

3. In vitro production of specialized reproductive torulose hyphae by Frankia strain ORS 021001 isolated from Casuarina junghuhniana root nodules

   • H. G. Diem, Y. R. Dommergues

   Pages 17-29

4. Characterization and infectivity of a spontaneous variant isolated from Frankia sp. WEY 0131391

   • Willie L. Parson, Linda R. Robertson, Carolyn V. Carpenter

   Pages 31-42

5. Restriction pattern analysis of genomic DNA of Frankia isolates

   • Chung Sun An, W. Stuart Riggsby, Beth C. Mullin

   Pages 43-48

6. Restriction enzyme digestion patterns of Frankia plasmids

   • P. Simonet, P. Normand, A. Moiroud, M. Lalonde

   Pages 49-60

7. Host range of Frankia endophytes

   • Huang Jiabin, Zhao Zheying, Chen Guanxiong, Liu Huichang

   Pages 61-65

8. Preinfection events in the establishment of Alnus-Frankia symbiosis: Development of a spot inoculation technique

   • L. Vergnaud, A. Chaboud, Y. Prin, M. Rougier

   Pages 67-78

9. Effect of juglone on growth in vitro of Frankia isolates and nodulation of Alnus glutinosa in soil

   • Christoph S. Vogel, Jeffrey O. Dawson

   Pages 79-89

10. Nitrogen fixation and respiration by root nodules of Alnus rubra Bong.: Effects of temperature and oxygen concentration*

    • Lawrence J. Winship, John D. Tjepkema

    Pages 91-107

11. Effect of spring flooding on endophyte differentiation, nitrogenase activity, root growth and shoot growth in Myrica gale

    • Christa R. Schwintzer

    Pages 109-124

12. Performance of in vitro propagated Alnus glutinosa (L.) Gaertn. clones inoculated with Frankiae

    • L. Simon, A. Stein, S. Côté, M. Lalonde

    Pages 125-133

13. Variation in response among three Alnus spp. clones to progressive water stress

    • T. C. Hennessey, L. K. Bair, R. W. McNew

    Pages 135-141

14. In vitro propagation and nodulation by Frankia of actinorhizal Russian Olive (Elaeagnus angustifolia L.)

    • L. J. Bertrand, M. Lalonde

    Pages 143-152

15. Inoculation and production of container-grown red alder seedlings

    • Mark D. Stowers, Jane E. Smith

    Pages 153-160

16. Seed germination, seedling inoculation and establishment of Alnus spp. in containers in greenhouse trials

    • Alison M. Berry, John G. Torrey

    Pages 161-173

17. Large scale inoculation of actinorhizal plants with Frankia

    • P. Périnet, J. G. Brouillette, J. A. Fortin, M. Lalonde

    Pages 175-183

18. Biomass production by alders on four abandoned agricultural soils in Québec

    • G. Prégent, C. Camiré

    Pages 185-193

19. Nitrogen cycling in dense plantings of hybrid poplar and black alder

    • B. Côté, C. Camiré

    Pages 195-208

The fifth meeting of scientists working with Frankia and actinorhizal plants was held at Montmorency Forest of Laval University in Quebec from August 6-8, 1984. Results of research presented at the meeting are included in this special volume of Plant and Soil. The understanding of actinorhizal systems continue to increase, though work­ and use shops and discussions at this and similar meetings make it evident that this important subject remains open for fruitful investigation at all levels. Some important 'firsts' were reported at this meeting. The first extensive survey of Frankiae and their host specificity ranges from Asia was presented. This is of significance since Asia is a center of diversity for many actinorhizal host plant genera. A report that proto­ plasts of Frankia have been produced and regenerated for the first time improves the possibility for genetic manipulation of Frankia. It is also important to note the first report herein of successful mass inoculation of actinorhizal plants commercially for stabilization and reclamation of disturbed soils around hydroelectric power projects in Quebec. This heralds the transfer of actinorhizal technology to private and public users. The bacterial genus Frankia is easily recognized both in vivo and in vitro, and isolation of this organism has become routine. But, as yet, there are not sufficient biochemical, morphological, or anatomical criteria for establishing species.

• biomass
• cyclin
• nitrogen
• root growth
• seedlings
• soil
• water stress

• Département des sciences forestières Faculté de foresterie, Université Laval, Ste-Foy, Canada

  M. Lalonde, C. Camiré

• Forestry Department, University of Illinois, Urbana, USA

  J. O. Dawson

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