@article {105,
	title = {Isoetes sinensis var. Sinensis in Korea (Isoetaceae: Pteridophyta)},
	journal = {Fern Gazette},
	volume = {16},
	year = {2000},
	note = {Cited By (since 1996):7Export Date: 11 November 2013Source: Scopus},
	month = {2000///},
	pages = {169 - 177},
	abstract = {Quillworts recently collected from a population on Cheju Island, South Korea, are tetraploid (2n = 44 = 22II) and have cristate megaspores and echinate microspores. Based on these characters, the specimens are identified as Isoetes sinensis var. sinensis, a globally rare taxon previously unreported in Korea. The apparently close taxonomic relationship between Korean I. sinensis var. sinensis and the basic diploid I. taiwanensis suggests that further phylogenetic investigation is warranted.},
	keywords = {Chromosome, Isoetes, Korea, Spore},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0039174448\&partnerID=40\&md5=8986e80438e25ba35955cf46aa7ed4f7},
	author = {Takamiya, M.}
}
@article {106,
	title = {Casparian strips in the leaf intrastelar canals of Isoetes duriei bory, a mediterranean terrestrial species},
	journal = {Annals of Botany},
	volume = {86},
	year = {2000},
	note = {Cited By (since 1996):6Export Date: 11 November 2013Source: Scopus},
	month = {2000///},
	pages = {1051 - 1054},
	abstract = {Anatomical observations, using light and fluorescence microscopy, were made on leaves of Isoetes duriei to verify the presence of casparian bands around the intrastelar canals. This peculiar anatomical feature, previously reported for some Isoetes species, is confirmed. The possible role of this endodermis-like structure, in the transport of water due to root pressure or in the accumulation of certain metabolites, is discussed in relation to the ecological and anatomical features of the species. (C) 2000 Annals of Botany Company.},
	keywords = {Casparian strips, Endodermis, Fluorescence microscopy, Iso{\"e}tes duriei, Leaf anatomy, Lycopsida, Mediterranean},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0033765118\&partnerID=40\&md5=a1f956e770d2b3c59c0ac85d579f7c9c},
	author = {Romeo, D. and Troia, A. and Burgarella, C. and Bellini, E.}
}
@article {107,
	title = {Isozymes of the Isoetes riparia complex, II. Ancestry and relationships of polyploids},
	journal = {Systematic Botany},
	volume = {25},
	year = {2000},
	note = {Cited By (since 1996):11Export Date: 11 November 2013Source: Scopus},
	month = {2000///},
	pages = {260 - 280},
	abstract = {Isoetes riparia is a complex tetraploid taxon of eastern North America that in its widest sense includes a diversity of morphotypes variously segregated, or included in a single polymorphic species. Although the diploid ancestry of I. riparia has been proposed as I. echinospora x engelmannii, it is uncertain whether this ancestry applies to all elements of the complex, here broadly defined to encompass three segregates of I. riparia and the recently described I. hyemalis (referred to informally as riparia, canadensis, saccharata and hyemalis). To help clarify relationships among these tetraploids, isozyme genotypes for 13 loci coding eight enzymes, were determined for 16 populations representing all four segregates. Duplicate gene expression, evidenced as fixed heterozygosity consistent with allopolyploidy, characterized the tetraploid genotypes of all taxa. Although exhibiting modest to no variation within populations, populations were highly differentiated, most showing a unique combination of alleles for their multilocus genotypes, with the exception of five genetically identical Canadian populations. Ancestry was evaluated through comparison to diploid genotypes previously reported. A quantitative approach was carried out to rank likelihoods for hypothetical ancestral combinations of diploids for each tetraploid population. The ancestry I. echinospora x engelmannii hypothesized for I. riparia was unequivocally supported for the six populations of the most northern segregate, canadensis. Diploid ancestries for the remaining 10 more southern populations were less certain, although the diploid I. mattaponi was implicated as a likely ancestor for most. Most likely ancestry for populations of riparia/saccharata was inferred as I. valida x mattaponi, and for hyemalis as I. mattaponi x flaccida. However, these hypotheses were only slightly more likely than other combinations. UPGMA analysis using Rogers{\textquoteright} similarity resulted in three clusters corresponding to canadensis, riparia/saccharata, and hyemalis. However, the hyemalis cluster was weakly associated and was not supported by UPGMA using Nei{\textquoteright}s identity. These highly variable tetraploid genotypes suggest a complicated evolutionary history for the I. riparia complex that probably involved a combination of diverse ancestry, multiple origins, divergence, and gene silencing.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0034046198\&partnerID=40\&md5=48c688dd1d8bd2bf3f8bc0a92bc03060},
	author = {Caplen, C.A. and Werth, C.R.}
}
@article {108,
	title = {The chloroplast genome structure of the vascular plant Iso{\"e}tes is similar to that of the liverwort Marchantia},
	journal = {American Fern Journal},
	volume = {90},
	year = {2000},
	note = {Export Date: 11 November 2013Source: Scopus},
	month = {2000///},
	pages = {51 - 59},
	abstract = {Restriction site mapping was used to characterize the chloroplast genome of the lycophyte, Iso{\"e}tes melanopoda. The Iso{\"e}tes chloroplast genome is approximately 139-145 kb in size with an inverted repeat of 12-13 kb. The gene content and consensus gene order are similar to that of Marchantia. A distinctive feature of the Iso{\"e}tes genome is an increased size of the small single copy (SSC) region possibly due to the insertion of a piece of DNA (3-8 kb) of unknown composition. The inferred insertion, along with a slightly larger inverted repeat, are responsible for the apparent size difference in the total genome relative to Marchantia. Patterns of restriction fragments were also consistent with the presence of a small inversion (2-3 kb) in the large single copy (LSC) region.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-9944243780\&partnerID=40\&md5=3fb650c66f2ac19a030f74b0002f62dd},
	author = {Duff, R.J. and Schilling, E.E.}
}
@article {109,
	title = {Isozymes of the Isoetes riparia complex, I. Genetic variation and relatedness of diploid species},
	journal = {Systematic Botany},
	volume = {25},
	year = {2000},
	note = {Cited By (since 1996):11Export Date: 11 November 2013Source: Scopus},
	month = {2000///},
	pages = {235 - 259},
	abstract = {Isozymes were examined in the six aquatic (including amphibious) diploid species of Isoetes of eastern North America in order to quantify their levels and patterns of genetic variation, to determine their genetic distinctness, and to evaluate the utility of allozymes in addressing ancestry in the I. riparia complex. Twenty-six populations representing diploid species, I. echinospora, I. engelmannii, I. flaccida, I. mattaponi, I. prototypus, and I. valida were compared for eleven enzymes coded by 16 interpretable loci. Levels of genetic variation in populations tended to be low ranging from none (means: P = 0.0, A = 1.0, H = 0.0) in I. echinospora to moderate (means: P = 22.9, A = 1.4, H = 0.093) in I. flaccida. Genetic variation in polymorphic species tended to be distributed more among than within populations, as indicated by high F(st) values (F(st) > 0.607 in all polymorphic species except I. mattaponi, for which F(st) = 0.272). The genetic identities of conspecific populations were high, with mean values ranging from I = 0.779/S = 0.733 in I. flaccida to I = 1.000/S = 1.000 in I. echinospora. Interspecific genetic identities were lower, with means ranging from I = 0.438/S = 0.429 between I. mattaponi and I. prototypus to I = 0.736 between I. valida and I. flaccida, and S = 0.699 between I. valida and I. prototypus. Thus the six diploids were found to be genetically distinct, corroborating their recognition based on morphology. Evidence from this study indicates that isozymes may be informative in diagnosing ancestry of allopolyploids in the Isoetes riparia complex.},
	url = {http://www.scopus.com/inward/record.url?eid=2-s2.0-0034042682\&partnerID=40\&md5=ed389e88047f4d191722332cdcce26a9},
	author = {Caplen, C.A. and Werth, C.R.}
}
