@article {149,
	title = {Carbon uptake characteristics in two high elevation populations of the aquatic CAM plant Isoetes bolanderi (Isoetacae)},
	journal = {American Journal of Botany},
	volume = {77},
	year = {1990},
	note = {Cited By (since 1996):7Export Date: 11 November 2013Source: Scopus},
	month = {1990///},
	pages = {682 - 688},
	abstract = {In Isoetes bolanderi, a resident of high elevation lakes in which ambient carbon levels are low and fairly constant throughout the day, CO2 uptake by the leaves generally parallels changes in photosynthetic photon flux density as opposed to changes in ambient CO2 levels. Overnight CO2 uptake by the leaves contributed up to 33\% of the total daily carbon assimilation from the water column which is typical of aquatic CAM species but low in comparison to the 30-50\% seen in the seasonal pool congener Isoetes howellii. Two additional sources of carbon may supplement the 24-hr period for carbon assimilation conferred by CAM in I. bolanderi: refixation of respiratory CO2 and carbon acquisition from the interstitial sediment water via roots. CAM appears to play a significant role in enhancing carbon gain in I. bolanderi which dominates the littoral flora of Siesta and Ellery Lakes (California) despite higher carbon uptakes rates from the water column found in one associated macrophyte Fontinalis antipyretica. -Authors},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0025603812\&partnerID=40\&md5=5a05f6c1d88f964ca446201241fd0446},
	author = {Sandquist, D.R. and Keeley, J.E.}
}
@article {157,
	title = {Diurnal acid metabolism in Isoetes howellii from a temporary pool and a permanent lake.},
	journal = {American Journal of Botany},
	volume = {70},
	year = {1983},
	note = {Cited By (since 1996):4Export Date: 11 November 2013Source: Scopus},
	month = {1983///},
	pages = {854 - 857},
	abstract = {Water chemistry and titratable acidity and malic acid levels in Isoetes howellii leaves were sampled every 6 hr from plants in a seasonal pool and an oligotrophic lake. Plants in the seasonal pool showed a diurnal fluctuation of approx 300 mu equivalents titratable acidity g-1 fresh wt; daytime deacidification was 75\% complete by noon and nighttime acidification was 45\% complete by midnight. Late in the season after the pool had dried, emergent leaves showed only a very weak tendency to accumulate acid at night. Plants from the oligotrophic lakes had a diurnal change of approx 100 mu eq g-1 fresh wt, daytime deacidification was only 45\% complete by noon but nighttime acidification was 80\% complete by midnight. In the seasonal pool there were marked diurnal changes in temperature, pH, oxygen and CO2. Free-CO2 levels were an order of magnitude greater in early morning than in late afternoon. Conditions in the oligotrophic lake showed no marked diurnal fluctuation, though total inorganic carbon levels were extremely low relative to other aquatic systems.-from AuthorsBiology Dept., Occidental College, Los Angeles, CA 90041, USA.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0020869168\&partnerID=40\&md5=ba962a51da3936c60f6e19e435120529},
	author = {Keeley, J.E. and Mathews, R.P. and Walker, C.M.}
}
@article {129,
	title = {Biosystematic studies on the genus Isoetes (Isoetaceae) in Japan. II. Meiotic behavior and reproductive mode of each cytotype},
	journal = {American Journal of Botany},
	volume = {83},
	year = {1996},
	note = {Cited By (since 1996):13Export Date: 11 November 2013Source: Scopus},
	month = {1996///},
	pages = {1309 - 1322},
	abstract = {Meiotic behaviors and reproductive modes of Japanese Isoetes were studied. The hexaploid (2n = 66) and the octaploid (2n = 88) of I. japonica consistently formed 33 and 44 bivalents, respectively, at diakinesis and/or metaphase I in both micro- and megaspore mother cells. The tetraploid (2n = 44) of I. sinensis formed 22 bivalents and its hexaploid made 33 bivalents in both types of spore mother cells. At diakinesis and/or metaphase I of microspore mother cells in I. asiatica with 2n = 22, 11 bivalents were detected. Because behaviors of meiosis in all cytotypes mentioned above were quite regular and plants yielded normal-appearing spores, they should reproduce sexually. Aneuploids of I. japonica with 2n = 87 formed 43 bivalents and one univalent, and I. sinensis with 2n = 65 formed 32 bivalents and one univalent in microspore mother cells. Meiosis of both cytotypes was almost regular and yielded microspores of normal appearance. In the heptaploid (2n = 77) of I. japonica, a configuration of 22 bivalents and 33 univalents was detected in micro- and megaspore mother cells, and various irregularities were observed throughout the meiotic divisions. Therefore, the genomic formula of the heptaploid is symbolized as AABBCDE, and the heptaploid is a sterile F 1 hybrid between the hexaploid (AABBCC) and the octaploid (AABBDDEE) of I. japonica. Since diploid and even-numbered polyploids regularly formed bivalents and odd-numbered ones displayed irregularities, allopolyploidy should act as a significant speciation mechanism in this genus.},
	keywords = {Chromosome, Hybrid, Isoetes, megasporogenesis, meiosis, microsporogene sis, polyplo id, reproductive mode},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0030475989\&partnerID=40\&md5=996182a1723b75d447e3a2137006f7bd},
	author = {Takamiya, M. and Watanabe, M. and Ono, K.}
}
@article {84,
	title = {Revealing unknown or extinct lineages within Iso{\"e}tes (Iso{\"e}taceae) using DNA sequences from hybrids},
	journal = {American Journal of Botany},
	volume = {91},
	year = {2004},
	note = {Cited By (since 1996):25Export Date: 11 November 2013Source: Scopus},
	month = {2004///},
	pages = {899 - 904},
	abstract = {Iso{\"e}tes, a heterosporous lycopod with a fossil record dating back to the Paleozoic, has numerous putative allopolyploids (resulting from hybridization events coupled with doubling of chromosome number). By using the highly variable nucleotide sequences from the second intron of a LFY homologue in Iso{\"e}tes, species could be delimited and hybrid origins determined. The data suggest that reticulate evolution is both common and complex within a more derived species complex of Iso{\"e}tes. Sequences of identifiable parentage and sequences that are unlike any diploid species known were recovered, leading to the conclusion that one or both of the putative parents have not yet been discovered or are extinct. A range of observations concerning allopolyploid speciation were categorized as follows: (1) verification of previous hypotheses regarding parentage (e.g., I. riparia, I. appalachiana), (2) determination that two morphologically distinct allotetraploid species can share the same parentage (I. azorica and I. acadiensis), (3) recognition of a cryptic allotetraploid species, indicated by the presence of different parental genomes (I. "appalachiana" from Florida), and (4) identification of allotetraploid species with one or two unknown parents (e.g., I. tuckermanii, I. acadiensis, I. azorica, and I. hyemalis). Some sequences from diploid species are remarkably uniform among populations (e.g., I. echinospora from various locations in North America, Iceland, and Wales), while others are variable at the subspecies level (e.g., northern and southern populations within I. engelmannii).},
	keywords = {Allopolyploidy, Hybrid origins, Isoetes, LEAFY intron},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-11444256350\&partnerID=40\&md5=420a4ad06820ce82f60d7a70e7db9dec},
	author = {Hoot, S.B. and Napier, N.S. and Taylor, W.C.}
}
@article {16,
	title = {Microsatellite primers in the endangered quillwort Isoetes hypsophila (Isoetaceae) and cross-amplification in I. sinensis},
	journal = {American Journal of Botany},
	volume = {99},
	year = {2012},
	note = {Cited By (since 1996):1Export Date: 11 November 2013Source: Scopus},
	month = {2012///},
	pages = {e184 - e186},
	abstract = {Premise of the study: The first microsatellite primers were developed for Isoetes hypsophila, an endangered quillwort species endemic to the Qinghai-Tibetan Plateau in China, to further describe its genetic variability and population structure. We also examined their cross-amplification in a congeneric species, I. sinensis. Methods and Results: Using the Fast Isolation by AFLP of Sequences COntaining Repeats (FIASCO) protocol, nine microsatellite loci were isolated and characterized in 32 samples from four natural populations of I. hypsophila. The primers amplified di-and hexanucleotide repeats with three to 11 alleles per locus. Seven of nine primers were cross-amplified in I. sinensis with two to seven alleles per locus. Conclusion: The microsatellite loci primers will be useful for studies of genetic diversity and gene flow in natural populations of Isoetes species. {\textcopyright} 2012 Botanical Society of America.},
	keywords = {Cross-amplification, Genetic diversity, Isoetaceae, Isoetes hypsophila, Isoetes sinensis, Microsatellite},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-84860573611\&partnerID=40\&md5=4de1802063e8ced0a9e32ab46966d215},
	author = {Li, Z. and Han, Q. and Chen, Y. and Li, W.}
}
