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Enhanced assimilation rate and water use efficiency with latitude through increased photosynthetic capacity and internal conductance in balsam poplar
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TLDR
Higher peak rates of height growth in high latitude genotypes of balsam poplar are supported by higher A, achieved partly through higher g(m), to help compensate for a shorter growing season.Abstract:
In outdoor common gardens, high latitude populations of deciduous tree species often display higher assimilation rates (A) than low latitude populations,but they accomplish less height.To test whether trends in A reflect adaptation to growing season length or, alternatively, are garden growth artefacts, we examined variation in height increment and ecophysiological traits in a range-wide collection of Populus balsamifera L. populations from 21 provenances, during unconstrained growth in a greenhouse. Rooted cut- tings, maintained without resource limitation under 21 h photoperiod for 90 d,displayed increasing height growth,A, leaf mass per area and leaf N per area with latitude whereas stomatal conductance (gs) showed no pattern. Water-use efficiency as indicated by both gas exchange and d 13 C increased with latitude, whereas photosynthetic nitrogen- use efficiency decreased. Differences in d 13 C were less than expected based on A/gs, suggesting coextensive variation in internal conductance (gm). Analysis of A-Ci curves on a subset of populations showed that high latitude genotypes had greater gm than low-latitude genotypes. We conclude that higher peak rates of height growth in high latitude genotypes of balsam poplar are supported by higher A, achieved partly through higher gm,to help compensate for a shorter growing season.read more
Citations
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Diffusional conductances to CO2 as a target for increasing photosynthesis and photosynthetic water-use efficiency.
Jaume Flexas,Ülo Niinemets,Alexander Gallé,Alexander Gallé,Margaret M. Barbour,Mauro Centritto,Antonio Díaz-Espejo,Cyril Douthe,Jeroni Galmés,Miquel Ribas-Carbo,Pedro L. Rodriguez,Francesc Rosselló,Raju Y. Soolanayakanahally,Magdalena Tomás,Ian J. Wright,Graham D. Farquhar,Hipólito Medrano +16 more
TL;DR: It is suggested that the appropriate trait for selection for enhanced WUE is increased gm/gs, and it is concluded that for simultaneous improvement of AN and WUE, genetic manipulation of gm should avoid parallel changes in gs.
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Geographical and environmental gradients shape phenotypic trait variation and genetic structure in Populus trichocarpa
Athena D. McKown,Robert D. Guy,Jaroslav Klápště,Jaroslav Klápště,Armando Geraldes,Michael Friedmann,Quentin C. B. Cronk,Yousry A. El-Kassaby,Shawn D. Mansfield,Carl J. Douglas +9 more
TL;DR: Robust relationships between traits, population structure and geoclimate in P. trichocarpa reflect patterns which suggest that range-wide geographical and environment gradients have shaped its genotypic and phenotypic variability.
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Growth and physiological responses of isohydric and anisohydric poplars to drought
TL;DR: Isohydric poplars have high water-use efficiency, while anisohydricpoplars show faster growth under a variable water supply, with implications for performance of the different genotypes for woody biomass production.
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Relocation, high‐latitude warming and host genetic identity shape the foliar fungal microbiome of poplars
Miklós Bálint,László Bartha,Robert B. O'Hara,Matthew S. Olson,Matthew S. Olson,Jürgen Otte,Markus Pfenninger,Amanda L. Robertson,Amanda L. Robertson,Peter Tiffin,Imke Schmitt +10 more
TL;DR: Examination of the effect of host relocation and high‐latitude warming on the complex fungal endophytic microbiome associated with leaves of an ecologically dominant boreal forest tree suggests that climate change effects on host–microbiome systems may be mediated by the interaction of environmental factors and the population genetic processes of the hosts.
Journal ArticleDOI
A 34K SNP genotyping array for Populus trichocarpa: Design, application to the study of natural populations and transferability to other Populus species
Armando Geraldes,Stephen P. DiFazio,Gancho T. Slavov,Gancho T. Slavov,Priya Ranjan,Wellington Muchero,Jan Hannemann,Lee E. Gunter,Ann M. Wymore,Christopher J. Grassa,Nima Farzaneh,Ilga Porth,Athena D. McKown,Oleksandr Skyba,Eryang Li,Miki Fujita,Jaroslav Klápště,Joel Martin,Wendy Schackwitz,Christa Pennacchio,Daniel S. Rokhsar,Michael Friedmann,G. O. Wasteneys,Robert D. Guy,Yousry A. El-Kassaby,Shawn D. Mansfield,Quentin C. B. Cronk,Jürgen Ehlting,Carl J. Douglas,Gerald A. Tuskan,Gerald A. Tuskan +30 more
TL;DR: Evidence for the utility of the SNP genotyping array to address evolutionary questions such as intraspecific studies of genetic differentiation, species assignment and the detection of natural hybrids is provided.
References
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The genome of black cottonwood, Populus trichocarpa (Torr. & Gray)
Gerald A. Tuskan,Gerald A. Tuskan,Stephen P. DiFazio,Stephen P. DiFazio,Stefan Jansson,Joerg Bohlmann,Igor V. Grigoriev,Uffe Hellsten,Nicholas H. Putnam,Steven G. Ralph,Stephane Rombauts,Asaf Salamov,Jacquie Schein,Lieven Sterck,Andrea Aerts,Rishikeshi Bhalerao,Rishikesh P. Bhalerao,Damien Blaudez,Wout Boerjan,Annick Brun,Amy M. Brunner,Victor Busov,Malcolm M. Campbell,John E. Carlson,Michel Chalot,Jarrod Chapman,G.-L. Chen,Dawn Cooper,Pedro M. Coutinho,Jérémy Couturier,Sarah F. Covert,Quentin C. B. Cronk,R. Cunningham,John M. Davis,Sven Degroeve,Annabelle Déjardin,Claude W. dePamphilis,John C. Detter,Bill Dirks,Inna Dubchak,Inna Dubchak,Sébastien Duplessis,Jürgen Ehlting,Brian E. Ellis,Karla C Gendler,David Goodstein,Michael Gribskov,Jane Grimwood,Andrew Groover,Lee E. Gunter,Björn Hamberger,Berthold Heinze,Yrjö Helariutta,Yrjö Helariutta,Yrjö Helariutta,Bernard Henrissat,D. Holligan,Robert A. Holt,Wenyu Huang,N. Islam-Faridi,Steven J.M. Jones,M. Jones-Rhoades,Richard A. Jorgensen,Chandrashekhar P. Joshi,Jaakko Kangasjärvi,Jan Karlsson,Colin T. Kelleher,Robert Kirkpatrick,Matias Kirst,Annegret Kohler,Udaya C. Kalluri,Frank W. Larimer,Jim Leebens-Mack,Jean-Charles Leplé,Philip F. LoCascio,Y. Lou,Susan Lucas,Francis Martin,Barbara Montanini,Carolyn A. Napoli,David R. Nelson,C D Nelson,Kaisa Nieminen,Ove Nilsson,V. Pereda,Gary F. Peter,Ryan N. Philippe,Gilles Pilate,Alexander Poliakov,J. Razumovskaya,Paul G. Richardson,Cécile Rinaldi,Kermit Ritland,Pierre Rouzé,D. Ryaboy,Jeremy Schmutz,J. Schrader,Bo Segerman,H. Shin,Asim Siddiqui,Fredrik Sterky,Astrid Terry,Chung-Jui Tsai,Edward C. Uberbacher,Per Unneberg,Jorma Vahala,Kerr Wall,Susan R. Wessler,Guojun Yang,T. Yin,Carl J. Douglas,Marco A. Marra,Göran Sandberg,Y. Van de Peer,Daniel S. Rokhsar,Daniel S. Rokhsar +115 more
TL;DR: The draft genome of the black cottonwood tree, Populus trichocarpa, has been reported in this paper, with more than 45,000 putative protein-coding genes identified.
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On the Relationship Between Carbon Isotope Discrimination and the Intercellular Carbon Dioxide Concentration in Leaves
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