Tree Physiology Journal Impact Factor & Information

Publisher: Oxford University Press (OUP)

Journal description

Tree Physiology is a refereed journal distributed internationally. Articles published may deal with any aspect of tree physiology, including growth, morphogenesis, photosynthesis, nutrition, pathology, reproduction, evolution, environmental adaptation, symbioses, heredity, metabolism, molecular biology, and the relation between structure and function. Also published are articles dealing with physiological aspects of biotechnology, environmental management and the economic use of trees.

Current impact factor: 3.41

Impact Factor Rankings

2015 Impact Factor Available summer 2015
2013 / 2014 Impact Factor 3.405
2012 Impact Factor 2.853
2011 Impact Factor 2.876
2010 Impact Factor 2.403
2009 Impact Factor 2.292
2008 Impact Factor 2.283
2007 Impact Factor 2.141
2006 Impact Factor 2.297
2005 Impact Factor 2.101
2004 Impact Factor 2.462
2003 Impact Factor 2.087
2002 Impact Factor 2.152
2001 Impact Factor 2.309
2000 Impact Factor 2.052
1999 Impact Factor 2.042
1998 Impact Factor 1.813
1997 Impact Factor 1.64
1996 Impact Factor 1.74
1995 Impact Factor 1.299
1994 Impact Factor 1.03
1993 Impact Factor 1.101
1992 Impact Factor 1.124

Impact factor over time

Impact factor

Additional details

5-year impact 3.13
Cited half-life 8.60
Immediacy index 0.68
Eigenfactor 0.01
Article influence 0.91
Website Tree Physiology website
Other titles Tree physiology
ISSN 0829-318X
OCLC 13989514
Material type Periodical, Internet resource
Document type Journal / Magazine / Newspaper, Internet Resource

Publisher details

Oxford University Press (OUP)

  • Pre-print
    • Author can archive a pre-print version
  • Post-print
    • Author cannot archive a post-print version
  • Restrictions
    • 12 months embargo
  • Conditions
    • Pre-print can only be posted prior to acceptance
    • Pre-print must be accompanied by set statement (see link)
    • Pre-print must not be replaced with post-print, instead a link to published version with amended set statement should be made
    • Pre-print on author's personal website, employer website, free public server or pre-prints in subject area
    • Post-print in Institutional repositories or Central repositories
    • Publisher's version/PDF cannot be used
    • Published source must be acknowledged
    • Must link to publisher version
    • Set phrase to accompany archived copy (see policy)
    • Eligible authors may deposit in OpenDepot
    • The publisher will deposit in PubMed Central on behalf of NIH authors
    • Publisher last contacted on 19/02/2015
    • This policy is an exception to the default policies of 'Oxford University Press (OUP)'
  • Classification
    ​ yellow

Publications in this journal

  • [Show abstract] [Hide abstract]
    ABSTRACT: Plants are subject to attack from organisms ranging from microbes to insects and large mammals, and thus have evolved an array of defence and resistance mechanisms to combat natural enemies (Howe and Jander 2008, War et al. 2012). This arsenal of chemical and physical traits can generally be thought of as either constitutive defences, which are produced and present before natural enemies attack, or inducible defences, which are produced in response to attack. While the importance of defence and resistance mechanisms for plant fitness has long been accepted, the presence of substantial variation in defence quantities and types (i.e., constitutive versus induced, chemical versus physical/anatomical) within and across plant species remains somewhat enigmatic (Zangerl and Bazzaz 1992, Endara and Coley 2011).
    Tree Physiology 02/2015; DOI:10.1093/treephys/tpv015
  • [Show abstract] [Hide abstract]
    ABSTRACT: Human-induced gene movement via afforestation and restoration programs is a widespread phenomenon throughout the world. However, its effects on the genetic composition of native populations have received relatively little attention, particularly in forest trees. Here, we examine to what extent gene flow from allochthonous plantations of Pinus pinaster impacts offspring performance in a neighboring relict natural population, and discuss the potential consequences for the long-term genetic composition of the latter. Specifically, we conducted a greenhouse experiment involving two contrasting watering treatments to test for differences in a set of functional traits and mortality rates between Pinus pinaster progenies from three different parental origins: (i) local native parents, (ii) exotic parents and (iii) intercrosses between local mothers and exotic fathers (intraspecific hybrids). Our results showed differences among crosses in cumulative mortality over time: seedlings of exotic parents exhibited the lowest mortality rates and seedlings of local origin the highest, while intraspecific hybrids exhibited an intermediate response. Linear regressions showed that seedlings with higher water use efficiency (WUE, δ13C) were more likely to survive under drought stress, consistently with previous findings suggesting that WUE has an important role under dry conditions in this species. However, differences in mortality among crosses were only partially explained by WUE. Other non-measured traits and factors such as inbreeding depression in the relict population are more likely to explain the lower performance of native progenies. Overall, our results indicated that intraspecific hybrids and exotic individuals are more likely to survive under stressful conditions than local native individuals, at least during the first year of development. Since summer drought is the most important demographic and selective filter affecting tree establishment in Mediterranean ecosystems, a potential early selective advantage of exotic and hybrid genotypes would enhance initial steps of introgression of non-native genes into the study relict population of Pinus pinaster.
    Tree Physiology 01/2015; in press. DOI:10.1093/treephys/tpu097
  • Tree Physiology 08/2014; Journal of Aquatic Science 29(1B):223-231.
  • [Show abstract] [Hide abstract]
    ABSTRACT: Background/Question/Methods Predicting future forests’ structure and functioning is a critical goal for ecologists. Information on seedling recruitment will be crucial for determining the composition and structure of future forest ecosystems. Seedling photosynthetic response to changing environmental conditions is key in determining recruitment in populations experiencing a changing climate. We studied photosynthetic responses of sugar maple (Acer saccharum), pignut hickory (Carya glabra), northern red oak (Quercus rubra), and eastern black oak (Quercus velutina) seedlings to a range of environmental conditions using temporally extensive in situ gas exchange measurements. We incorporated environmental variables into the Farquhar model of photosynthesis in a Bayesian hierarchical framework and allowed most parameters to vary seasonally to address two questions: (1) How do commonly estimated photosynthetic parameters (gm, Rd, Vcmax, Jmax) vary through the growing season among seedlings in field conditions? (2) How are these parameters affected by light availability, temperature, soil moisture, and vapor pressure deficit (VPD) within and among seasons? In addition, to understand how photosynthetic assimilation rates of our species might be impacted under projected increases in temperature due to climate change (3), we used posterior estimates of model parameters to estimate net assimilation rates under current temperature averages and +3ºC scenarios. Results/Conclusions Maximum Rubisco carboxylation (Vcmax) and electron transport (Jmax) rates showed significant seasonal variation, but differed from patterns observed in other studies of adult trees. Vapor pressure deficit and soil moisture limited Jmax and Vcmax across the growing season for all four species. Results from predictions indicated that seedlings would experience large declines in summer assimilation rates under a 3 ºC increase in temperature, while spring and fall assimilation rates may increase. In particular, our models predict decreases in the summer assimilation rate in gap habitats with at least 90% probability, and with 20% to 99.9% probability in understory habitats depending on species. Predictions also show 70% probability of increases in photosynthetic rates in fall, and 52% probability of increases in spring in understory habitats. Our results indicate that under projected increases in temperature and aridity, drought tolerant species will be at a competitive advantage due to superior assimilation rates under these conditions. Our findings indicate that all species will be impacted, but oak species may become more dominant in Northeastern forests under projected increases in temperature, though as growing seasons become longer, the effects of climate change on seedling photosynthesis may be complex.
    99th ESA Annual Convention 2014; 08/2014
  • [Show abstract] [Hide abstract]
    ABSTRACT: Seasonal drought, typical of temperate and Mediterranean environments, creates problems in establishing plantations and affects development and yield, and it has been widely studied in numerous species. Forestry fast-growing species such as Eucalyptus spp. are an important resource in such environments, selected clones being generally used for production purposes in plantations in these areas. However, use of mono-specific plantations increases risk of plant loss due to abiotic stresses, making it essential to understand differences in an individual clone's physiological responses to drought stress. In order to study clonal differences in drought responses, nine Eucalyptus globulus (Labill.) clones (C14, C46, C97, C120, C222, C371, C405, C491 and C601) were gradually subjected to severe drought stress (<14% of field capacity). A total of 31 parameters, physiological (e.g., photosynthesis, gas exchange), biochemical (e.g., chlorophyll content) and hormonal (abscisic acid [ABA] content), were analysed by classic and multivariate techniques. Relationships between parameters were established, allowing related measurements to be grouped into functional units (pigment, growth, water and ABA). Differences in these units showed that there were two distinct groups of E. globulus clones on the basis of their different strategies when faced with drought stress. The C14 group (C14, C120, C405, C491 and C601) clones behave as water savers, maintaining high water content and showing high stomatal adjustment, and reducing their aerial growth to a great extent. The C46 group (C46, C97, C222 and C371) clones behave as water spenders, reducing their water content drastically and presenting osmotic adjustment. The latter maintains the highest growth rate under the conditions tested. The method presented here can be used to identify appropriate E. globulus clones for drought environments, facilitating the selection of material for production and repopulation environments.
    Tree Physiology 07/2014; DOI:10.1093/treephys/tpu052
  • [Show abstract] [Hide abstract]
    ABSTRACT: Sugars play an important role in various physiological processes during plant growth and development; however, the developmental roles and regulatory functions of hexoses other than glucose are still largely unclear. Recent studies suggest that blocked embryo development in Norway spruce (Picea abies (L.) Karst) is associated with accumulation of fructose. In the present study, the potential biochemical regulatory mechanism of glucose and fructose was studied during development of somatic embryos of Norway spruce from pro-embryogenic masses to mature embryos. The changes in protein fluorescence, a marker of the Maillard reaction, were monitored in two cell lines of Norway spruce that were grown on media containing sucrose (control), glucose or fructose. Manual time-lapse photography showed that growth of embryogenic cultures on medium containing sucrose was characterized by normal development of mature embryos whereas the embryogenic cultures that were grown on media containing glucose or fructose did not develop mature embryos. The biochemical analyses of embryogenic samples collected during embryo development showed that: (i) the content of glucose and fructose in the embryogenic cultures increased significantly during growth on each medium, respectively; (ii) the accumulation of Maillard products in the embryogenic cultures was highly correlated with the endogenous content of fructose but not glucose; and (iii) the embryogenic cultures grown on fructose displayed the highest protein carbonyl content and DNA damage whereas the highest content of glutathione was recorded in the embryogenic cultures that had grown on sucrose. Our data suggest that blocked development of embryos in the presence of fructose may be associated with the Maillard reaction.
    Tree Physiology 06/2014; 34(6):657-69. DOI:10.1093/treephys/tpu053
  • [Show abstract] [Hide abstract]
    ABSTRACT: To investigate the effects of light quality (wavelength) on shoot elongation and flower-bud formation in Japanese pear (Pyrus pyrifolia (Burm. f.) Nakai), we treated 1-year-old trees with the following: (i) 8 h sunlight + 16 h dark (SD); (ii) 8 h sunlight + 16 h red light (LD(SD + R)); or (iii) 8 h sunlight + 16 h far-red (FR) light (LD(SD + FR)) daily for 4 months from early April (before the spring flush) until early August in 2009 and 2010. In both years, shoot elongation stopped earlier in the LD(SD + FR) treatment than in the SD and LD(SD + R) treatments. After 4 months of treatments, 21% (2009) or 40% (2010) of LD(SD + FR)-treated trees formed flower buds in the shoot apices, whereas all the shoot apices from SD or LD(SD + R)-treated plants remained vegetative. With an additional experiment conducted in 2012, we confirmed that FR light at 730 nm was the most efficacious wavelength to induce flower-bud formation. Reverse transcription-quantitative polymerase chain reaction revealed that the expression of two floral meristem identity gene orthologues, LEAFY (PpLFY2a) and APETALA1 (PpMADS2-1a), were up-regulated in the shoot apex of LD(SD + FR). In contrast, the expression of a flowering repressor gene, TERMINAL FLOWER 1 (PpTFL1-1a, PpTFL1-2a), was down-regulated. In addition, expression of an orthologue of the flower-promoting gene FLOWERING LOCUS T (PpFT1a) was positively correlated with flower-bud formation, although the expression of another orthologue, PpFT2a, was negatively correlated with shoot growth. Biologically active cytokinin and gibberellic acid concentrations in shoot apices were reduced with LD(SD + FR) treatment. Taken together, our results indicate that pear plants are able to regulate flowering in response to the R : FR ratio. Furthermore, LD(SD + FR) treatment terminated shoot elongation and subsequent flower-bud formation in the shoot apex at an earlier time, possibly by influencing the expression of flowering-related genes and modifying plant hormone concentrations.
    Tree Physiology 05/2014; DOI:10.1093/treephys/tpu033
  • [Show abstract] [Hide abstract]
    ABSTRACT: Stem CO2 efflux is known to vary seasonally and vertically along tree stems. However, annual tree- and stand-scale efflux estimates are commonly based on measurements made only a few times a year, during daytime and at breast height. In this study, the effect of these simplifying assumptions on annual efflux estimates and their influence on the estimates of the importance of stems in stand-scale carbon cycling are evaluated. In order to assess the strength of seasonal, diurnal and along-stem variability in CO2 efflux, half-hourly measurements were carried out at three heights on three mature Norway spruce (Picea abies (L.) Karst.) trees over a period of 3 years. Making the common assumption of breast height efflux rates being representative of the entire stem was found to result in underestimations of 10-17% in the annual tree-scale CO2 efflux. Upscaling using only daytime measurements from breast height increased the underestimation to 15-20%. Furthermore, the results show that the strength of the vertical gradient varies seasonally, being strongest in the early summer and non-existent during the cool months. The observed seasonality in the vertical CO2 efflux gradient could not be explained by variation in stem temperature, temperature response of the CO2 efflux (Q10), outer-bark permeability, CO2 transport in the xylem or CO2 release from the phloem. However, the estimated CO2 concentration immediately beneath the bark was considerably higher in the upper stem during the main period of diameter growth, coinciding with the strongest vertical efflux gradient. These results suggest that higher growth rates in the upper stem are the main cause for the observed vertical variation in the stem CO2 effluxes. Furthermore, the results indicate that accounting for the vertical efflux variation is essential for assessments of the importance of stems in stand-scale carbon cycling.
    Tree Physiology 05/2014; DOI:10.1093/treephys/tpu036