Abstract:
BACKGROUND AND AIMS:The thermoregulatory flower of the Asian sacred lotus (Nelumbo nucifera) can maintain a relatively stable temperature despite great variations in ambient temperature during anthesis. The thermoregulation has been hypothesized to offer a direct energy reward for pollinators in lotus flowers. This study aims to examine whether the stable temperature maintained in the floral chamber influences the fertilization process and seed development. METHODS:An artificial refrigeration instrument was employed to cool flowers during the fertilization process and post-fertilization period in an experimental population. The effect of temperature on post-pollination events was also examined by removing petals in two field populations. KEY RESULTS:Treatments with low floral temperature did not reduce stigma receptivity or pollen viability in undehisced anthers. Low temperature during the fertilization period significantly decreased seed set per flower but low temperature during the phase of seed development had no effect, suggesting that temperature regulation by lotus flowers facilitated fertilization success. Hand-pollination treatments in two field populations indicated that seed set of flowers with petals removed was lower than that of intact flowers in north China, where ambient temperatures are low, but not in south China, confirming that reducing the temperature of carpels did influence post-pollination events. CONCLUSIONS:The experiments suggest that floral thermoregulation in lotus could enhance female reproductive success by facilitating fertilization.
journal_name
Ann Botjournal_title
Annals of botanyauthors
Li JK,Huang SQdoi
10.1093/aob/mcp051subject
Has Abstractpub_date
2009-05-01 00:00:00pages
1159-63issue
7eissn
0305-7364issn
1095-8290pii
mcp051journal_volume
103pub_type
杂志文章相关文献
ANNALS OF BOTANY文献大全abstract:BACKGROUND AND AIMS:Since the proposal of the cohesion theory there has been a paradox that the lumenal surface of vessels is rich in hydrophobic lignin, while tension in the rising sap requires adhesion to a hydrophilic surface. This study sought to characterize the strength of that adhesion in maize (Zea mays), the w...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcu020
更新日期:2014-05-01 00:00:00
abstract:BACKGROUND:Carboxylate-releasing cluster roots of Proteaceae play a key role in acquiring phosphorus (P) from ancient nutrient-impoverished soils in Australia. However, cluster roots are also found in Proteaceae on young, P-rich soils in Chile where they allow P acquisition from soils that strongly sorb P. SCOPE:Unlik...
journal_title:Annals of botany
pub_type: 杂志文章,评审
doi:10.1093/aob/mcs130
更新日期:2012-07-01 00:00:00
abstract:BACKGROUND AND AIMS:Species in plant communities segregate along fine-scale hydrological gradients. Although this phenomenon is not unique to fynbos, this community regenerates after fire and therefore provides an opportunity to study the ecological genesis of hydrological niche segregation. METHODS:Following wildfire...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcs160
更新日期:2012-11-01 00:00:00
abstract:Background and Aims:During the growing season, the cambium of conifer trees produces successive rows of xylem cells, the tracheids, that sequentially pass through the phases of enlargement and secondary wall thickening before dying and becoming functional. Climate variability can strongly influence the kinetics of morp...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcw274
更新日期:2017-04-01 00:00:00
abstract:BACKGROUND AND AIMS:Dynamic management (DM) of genetic resources aims at maintaining genetic variability between different populations evolving under natural selection in contrasting environments. In 1984, this strategy was applied in a pilot experiment on wheat (Triticum aestivum). Spatio-temporal evolution of earline...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl160
更新日期:2006-10-01 00:00:00
abstract:BACKGROUND AND AIMS:Cotton (Gossypium hirsutum) has indeterminate growth. The growth regulator mepiquat chloride (MC) is used worldwide to restrict vegetative growth and promote boll formation and yield. The effects of MC are modulated by complex interactions with growing conditions (nutrients, weather) and plant popul...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mct309
更新日期:2014-09-01 00:00:00
abstract:Background and Aims:Fossil plants are found as fragmentary remains and understanding them as natural species requires assembly of whole-organism concepts that integrate different plant parts. Such concepts are essential for incorporating fossils in hypotheses of plant evolution and phylogeny. Plants of the Early Devoni...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcw277
更新日期:2017-05-01 00:00:00
abstract:Background and Aims:Recent parsimony-based reconstructions suggest that seeds of early angiosperms had either morphophysiological or physiological dormancy, with the former considered as more probable. The aim of this study was to determine the class of seed dormancy present in Amborella trichopoda , the sole living re...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcw244
更新日期:2017-03-01 00:00:00
abstract:BACKGROUND AND AIMS:The persistence of plants inhabiting restricted alpine areas under climate change will depend upon many factors including levels of genetic variation in adaptive traits, population structure, and breeding system. METHODS:Using microsatellite markers, the genetic structure of populations of a relati...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp018
更新日期:2009-04-01 00:00:00
abstract:BACKGROUND:The trailing edges of species ranges are becoming a subject of increasing interest as the environment changes due to global warming. Trailing edge populations are likely to face extinction because of a decline in numbers and an inability to evolve new adaptations with sufficient speed. Discussions of charact...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcr159
更新日期:2012-02-01 00:00:00
abstract:BACKGROUND AND AIMS:The pseudometallophyte Noccaea caerulescens is an excellent model to study evolutionary processes, as it grows both on normal and on heavy-metal-rich, toxic soils. The evolution and demography of populations are critically impacted by mating system and, yet, information about the N. caerulescens mat...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcv191
更新日期:2016-03-01 00:00:00
abstract:BACKGROUND AND AIMS:A phalanx growth form enables clonal plants to make better use of resource-rich patches, whereas a guerrilla growth form provides them with opportunities to escape from resource-poor sites. Leymus secalinus produces both spreading (guerrilla form) and clumping ramets (phalanx form). Here, the hypoth...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl086
更新日期:2006-07-01 00:00:00
abstract:BACKGROUND AND AIMS:Induction of dehydration tolerance is a key to achieving high survival rates in cryopreservation of plant specimens. It has been reported previously that two-step preculturing with sucrose effectively increased desiccation tolerance in axillary buds of gentian (Gentiana scabra), which allow the buds...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl054
更新日期:2006-06-01 00:00:00
abstract:Background and Aims:Diversity of the genus Sorbus has been affected by interspecific hybridizations. Pink-flowered hybrid species have been insufficiently studied so far. They comprise bigenomic hybrid species derived from crosses S. aria s.l. × S. chamaemespilus and trigenomic ones, where S. aucuparia was involved as ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcx013
更新日期:2017-08-01 00:00:00
abstract:BACKGROUND AND AIMS:A standardized methodology to assess the impacts of land-use changes on vegetation and ecosystem functioning is presented. It assumes that species traits are central to these impacts, and is designed to be applicable in different historical, climatic contexts and local settings. Preliminary results ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl215
更新日期:2007-05-01 00:00:00
abstract:BACKGROUND AND AIMS:The leaf anatomy and ultrastructure of Deschampsia antarctica (Poaceae) plants growing in three different habitats (a dry site in the Antarctic tundra, a wet site in a zone exposed to sea spray and a greenhouse) were investigated. The ultrastructure of the leaves of D. antarctica has not been studie...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mci262
更新日期:2005-11-01 00:00:00
abstract:BACKGROUND AND AIMS:During the Mesozoic, the polar regions supported coniferous forests that experienced warm climates, a CO(2)-rich atmosphere and extreme seasonal variations in daylight. How the interaction between the last two factors might have influenced water use of these conifers was investigated. An experimenta...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp108
更新日期:2009-07-01 00:00:00
abstract:BACKGROUND AND AIMS:Latewood formation in conifers occurs during the later part of the growing season, when the cell division activity of the cambium declines. Changes in temperature might be important for wood formation in trees. Therefore, the effects of a rapid decrease in temperature on cellular morphology of trach...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcs149
更新日期:2012-09-01 00:00:00
abstract:BACKGROUND:Sweet melons, Cucumis melo, are a widely grown and highly prized crop. While melons were familiar in antiquity, they were grown mostly for use of the young fruits, which are similar in appearance and taste to cucumbers, C. sativus. The time and place of emergence of sweet melons is obscure, but they are gene...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcs098
更新日期:2012-07-01 00:00:00
abstract:BACKGROUND AND AIMS:The endemic tree Nothofagus alessandrii (Fagaceae) has been historically restricted to the coastal range of Region VII of central Chile, and its forests have been increasingly destroyed and fragmented since the end of the 19th century. In this study, the patterns of within- and among-population gene...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcm073
更新日期:2007-07-01 00:00:00
abstract:BACKGROUND AND AIMS:The optimal period for seedling emergence depends on factors such as habitat preference, life cycle and geographical distribution. This research was performed to clarify the role of temperature in regulating processes leading to seedling emergence of the European continental Scilla bifolia and the A...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcn165
更新日期:2008-11-01 00:00:00
abstract:BACKGROUND AND AIMS:Cypripedium flavum is a rare, endemic alpine slipper orchid of China, which is under threat from excessive collection and habitat changes. Conservation and re-introduction of C. flavum is restricted by lack of knowledge of the plant's photosynthesis and how that affects reproductive success. The hyp...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mci146
更新日期:2005-07-01 00:00:00
abstract:BACKGROUND AND AIMS:Hybridization is an important evolutionary process that can have a significant impact on natural plant populations. Eucalyptus species are well known for weak reproductive barriers and extensive hybridization within subgenera, but there is little knowledge of whether patterns of hybridization differ...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcaa164
更新日期:2021-01-01 00:00:00
abstract:BACKGROUND AND AIMS:Data are presented from 39 species of mosses and 16 liverworts for ratios of chlorophylls and total carotenoids, and light saturation of photosynthetic electron flow or photosynthetic CO2 uptake, in relation to the postulate that bryophyte cells in general show shade-plant characteristics. METHODS:...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mch178
更新日期:2004-10-01 00:00:00
abstract:BACKGROUND AND AIMS:An investigation was carried out to determine whether stomatal closure in flooded tomato plants (Solanum lycopersicum) results from decreased leaf water potentials (psi(L)), decreased photosynthetic capacity and attendant increases in internal CO(2) (C(i)) or from losses of root function such as cyt...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcn208
更新日期:2009-01-01 00:00:00
abstract:BACKGROUND AND AIMS:Sexual dimorphism in morphology, physiology or life history traits is common in dioecious plants at reproductive maturity, but it is typically inconspicuous or absent in juveniles. Although plants of different sexes probably begin to diverge in gene expression both before their reproduction commence...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcy183
更新日期:2019-07-08 00:00:00
abstract:BACKGROUND AND AIMS:Pea (Pisum sativum) primary roots form long vascular cavities when grown under wet or flooded conditions at 25 degrees C. It is thought that the cavities are a form of aerenchyma. At 25 degrees C short roots continue to grow after flooding. After roots reach 10 cm long flooding causes rapid cessatio...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcl040
更新日期:2006-05-01 00:00:00
abstract:BACKGROUND AND AIMS:Nitric oxide (NO) has been demonstrated to stimulate the activity of nitrate reductase (NR) in plant roots supplied with a low level of nitrate, and to affect proteins differently, depending on the ratio of NO to the level of protein. Nitrate has been suggested to regulate the level of NO in plants....
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcp087
更新日期:2009-07-01 00:00:00
abstract:BACKGROUND AND SCOPE:Over more than 120 years of scientific study since Schimper's seminal work, the recognized categories of structurally dependent plants have changed several times. Currently, ignoring parasitic mistletoes, it is usual to distinguish four functional groups: (1) true epiphytes; (2) primary hemiepiphyt...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mct085
更新日期:2013-06-01 00:00:00
abstract::Young trees 0.03-1.7 m high of three coexisting Betula species were investigated in four sites of varying soil fertility, but all in full daylight, to separate nutrient and plant size controls on leaf dry mass per unit area (MA), light-saturated foliar photosynthetic electron transport rate (J) and the fraction of pla...
journal_title:Annals of botany
pub_type: 杂志文章
doi:10.1093/aob/mcf025
更新日期:2002-02-01 00:00:00