This is a summary of selected genetic research information (e.g., new factors; mapping; cloning) reported in this News Letter and in recent literature ("r" refers to numbered references in the Recent Maize Publications section). The Symbol Index refers by number to all current published research involving genetic materials; comments on this new aid would be welcome.
BS = Base Sequence; BSH = Broad Sense Heritability; gca, sca = general and specific combining ability; QTL = Quantitative Trait Loci; RM = Restriction Map; unc. = uncovered
* in symbols identifies loci needing allelism tests, documentation, or standardization of the symbol.
CHROMOSOME 1
Sod4, two cDNAs; BS; mapped near P1 --Cannon & r67; Weber & r674
Kn1-2F11 contains Ds2 insertion, genomic, RM; Kn1-O deletion --Hake & r226
D8, Mpl1 both 3-4 m.u. distal to Adh1 and lw1, between T1-3(5267)(1L.72,3L.73) & T1-3(5242)(1L.90,3L.65) --Harberd & r234
Glb1-0, -L, -I, -S, -V; cDNA, BS --Kriz r326
P1-VV P1-RR*-2 P1-RR*-1 P1-WW-1112: genomic, RM --Lechelt & r349
Adh1-Cm, RM, BS --Osterman & r448
bz2 cDNA, RM --Theres & r627
TB positions, 1S through 1L: NPI109 NPI234 P1 TB-1Sb NPI304 TB-1La NPI40 NPI236 NPI54 NPIPhy1 NPI82 NPI238 --Weber & r674
Mono-1, nulli-1 pollen development --Zhao & r712
PIO200044 - 5 - hm1 - 5 - PIO200644 --Johal & 64:36,37
idd*-2286A, indeterminate dwarf, unc. by TB-1La --Neuffer 64:52
CHROMOSOME 2
Ht1 near UMC122 --Hoisington & r253
hcf106, Mu1 insert, genomic: RM; on 2 (B. Burr) --Martienssen & r384
B1 probed with r1-nj:1 clone --Robbins & r515
TB positions, 2S through 2L: NPI320 NPI57 B1 TB-3La-2S6270 NPI11 NPISSu2 TB-1Sb-2L4464 NPI123 NPI337 NPI210 --Weber & r674
Tpi2 unc. by TB-1Sb2L4464; fl1 - 15 - v4 - 17 - Tpi2 --Wendel & r677
Mono-2, nulli-2 pollen development --Zhao & r712
CHROMOSOME 3
a1 & a1-m1Cache rDt element, A1' revertant: RM, BS --Brown & r49
vp1-mum1, -mum2, -mum3, -w1, -w2, -w3; clone, RM --McCarty & r398
TB positions, 3S through 3L: NPIMe1 NPI249 NPI89 NPI219 TB-3Sb TB-3La NPI83 NPI70 NPI90 NPI78 NPI212 TB-3La-2S6270 NPI91 --Weber & r674
Tpi4 not unc. by TB-3Sb, TB-3La, TB-3Lf, TB3-Lg; d1 - 12 - Tpi4 - 11 - Lg3; Pgd2 arm location uncertain --Wendel & r677
Mono-3, nulli-3 pollen development --Zhao & r712
D*-1991, semidwarf, linked with wx1 T3-9c --Neuffer 64:51
CHROMOSOME 4
Cat3 on 4S --Smith r578
TB positions, 4S through 4L: (NPI77 NPI27 NPI95) TB-4Sa TB-1La-4L4692 NPI250 TB-9Sb-4L6504 NPI208 NPI36 TB-7Lb-4L4698 NPI333 --Weber & r674
Zeins linked with su1, including zein-A1/30.5, -A1/37, -A2/28, -B8/32, -B8/54.5, -B6/36, -B7/17.5, -A2/60, -A3/14, -A3/19, -A3/33, -A3/33.5, -B9/49, -B9/35 --Wilson & r693
orp1 on 4S per TB-4Sa and TB-4Lf ratios in hypos and hypers; orp1 - 1 - su1; BNL15.45 - orp1 - BNL7.20L --Wright & r700, 64:50
Mono-4, nulli-4 pollen development --Zhao & r712
Ms44 (was Ms*-7255), male sterile, Ms44 - 14 - Ms41 Albertsen & 64:52
se1 unc. by TB-1La-4L4692 (Labonte thesis); se1 near BNL15.07 and NPI333 --Bredenkamp & 64:108
c2-m1 Spm, by inverse polymerase chain reaction & RFLPs, maps on 4L --Earp & 64:2
Ts5 - 1 - dek7 - 5 - su1 --Neuffer 64:52
su1 - gl4 - 14 - dek31 --Sheridan 64:64
CHROMOSOME 5
TB positions, 5S through 5L: NPI409 NPI75 NPI282 NPI233 TB-5Sc TB-5La NPI60 NPI115 NPI237 NPI74 --Weber & r674
NPI346-TPI (was "Tpi5") redesignated Tpi6 (by ed.) --Wendel & r677
Mrh-37962 linked with wx1 T5-9c --Dempsey & 64:31
pr1 - 29 - Dap1 - 15 - v2; pr1 - 6 - v12 - 24 - Dap1 --Stinard & 64:12
D*-2319, semidwarf, linked with wx1 T5-9c; Nl2 (was Rgd2, Rgd*-1445) renamed; Nl2 - 10 - a2 - 3 - bt1 --Neuffer 64:52
b70 protein probe maps near BNL1.380 --Shank & 64:97
sh5 - 17 - v3 - 32 - pr1 --Sprague 64:110
CHROMOSOME 6
Dehydration-induced protein (17 kDa, dehydrin) (Dhn1, UMC170-DHN, location on 6L), cDNA, BS --Close & r91
Mdm1, Maize dwarf mosaic virus R; UMC85 - 0.4 - Mdm1 - 0.8 - BNL6.29 - 4.9 - Y1 - 2.1 - UMC59 - 36.6 - UMC21; MDMV R linked with Y1 in several lines --McMullen & r400; Scott r558
TB positions, 6S through 6L: (NPI235 NPI245) TB-6Sa TB-6Lc Y1 NPI223 NPI265 TB-6Lb NPI252 NPI280 --Weber & r674
Mono-6, nulli-6 pollen development --Zhao & r712
sbd1 (was wxl*-2292), sunburned, unc. by TB-6L --Neuffer 64:52
CHROMOSOME 7
Rcm1, rectifier of teosinte-cytoplasm miniature seed/retarded growth; miniature pollen, gametophytic, closely associated; Rcm1-w, weak allele; Rcm1 - 3.3 - vp9 --Allen & r6
o2, BS --DiFonzo & r133; Hartings & r238; Maddaloni & r373
TB positions, 7S through 7L: NPI28 NPI111 TB-7Lb NPI216 NPI112 TB-7Lb-4L4698 NPI283 NPI431 --Weber & r674
o2 - 20 - gl1 - 23 - Tpi1 --Wendel & r677
Zeins linked with T7-9(4363) & y8, including zein-D/55, -B9/22, -B9/10, -B8/38 --Wilson & r693
Mono-7, nulli-7 pollen development --Zhao & r712
BNL8.32 - (b32 probe) - BNL7.61 --Bass & 64:97
Rs4 (was Rs*-1606), rough sheath, 1% recomb. with wx1 T7-9(4363), 14% with wx1 T7-9g --Neuffer 64:51
CHROMOSOME 8
TB positions, 8S through 8L: NPI114 NPI110 NPI64 NPI37 TB-8La NPIPdk2 --Weber & r674
Tpi3, Mdh1 not unc. by TB-8Lc, Idh1 unc. by TB-8Lc; Tpi3 - 17 - Mdh1 - 18 - Idh1 - 29 - Tpi5; NPI346 locus "Tpi5" on chromosome 5 redesignated Tpi6 by ed. --Wendel & r677
Mono-8, nulli-8 pollen development --Zhao & r712
BNLAct1 - (b32 probe = pro1?) -BNL2.369 --Bass & 64:97
Rf4 - 14 - BNL13.05 - 12 - BNL9.11 --Sisco 64:97
CHROMOSOME 9
c1 clone homologous sequences: cDNAs Zm1 & Zm38, BS --Marocco & r382
TB positions, 9S through 9L: NPI253 (NPI343 NPI211) sh1 NPI266 (TB-9Sb TB-9Sb-4L6504) (NPI300 BNL3.06) wx1 TB-9Sd NPIPep1 TB-9Lc (BNL5.10 NPI454 NPI416 NPI222 UMC20) BNL7.13 NPI80 NPI293 NPICss2 TB-9La NPI209 NPI97 --Weber & r674
Mono-9, nulli-9 pollen development --Zhao & r712
CHROMOSOME 10
r1-ch:Hopi recombination analysis negative --Racchi & r503
r1-nj:1 probe --Robbins & r515
TB positions, 10S through 10L: NPI285 NPI105 TB-10Sc TB-10L19 NPI85 TB-10L36 NPI92 NPI350 --Weber & r674
orp2 - 13 - g1; orp2 - 18 - R1; PIO06003 (or PIO06005) and orp2 closely linked --Wright & r700, 64:50
Mono-10, nulli-10 pollen development --Zhao & r712
Seed (S) component of R1, BS --Perrot & r469
Gs4 (was Gs*-1439), green striped, linked with wx1 T9-10b; Gs4 - 23 - R1 --Neuffer 64:51
UNPLACED
Rcm2, rectifier (weak) of teosinte-cytoplasm miniature seed/retarded growth; Rcm3, rectifier from Z. diploperennis; Rcm*-X, from Z. luxurians --Allen & r6
mr1*, mr2*, mr3*, etc. (mrv1, etc.) new designations for multi-ranking vs. two-ranking (tr1) in ear; tpe1, thin pericarp; Ma1 (Mal*), multiple aleurone --Galinat r193; 64:120
Glb2-0 --Kriz r326
dsy3, dsy4, desynaptic --Golubovskaya r212
atn1, anaerobic tolerant null --Lemke-Keyes & r354
MYG-1, maternally inherited yellow-green --Mourad & r424
ba3 (was ba*-861059b) barren stalk --Pan & 64:8
Betaine-deficient (stress response), recessive --Rhodes & r512
LT19* and LT-R3*, lysine-threonine R, not allelic --Duncan & 64:110
cif1, cross-incompatible female; cim1 & cim2, cross-incompatible male --Rashid & 64:8
Wi3 (was Wi*-1614), wilted; Rld*-1441 and Rld*-1990, rolled leaf, closely linked or allelic --Neuffer 64:51
Fas1, fascicled ear --Nelson & 64:81
Rf7, partial restorer of cms-Y --Qin & 64:124
gl23 (was gl*-PI262490); gl24 duplicate factor with gl14 --Sprague 64:110
B CHROMOSOME
TRANSPOSABLE ELEMENTS
rDt element RM, BS --Brown & r49
tnpA protein of En-1, binding motifs --Gierl & r206
Bs1 RM, BS --Jin & r275; Johns & r278
Mrh, Uq in BSSS population --Peterson r472
Cy & Mu relationship --Schnable & r552
rcy:Mu7 RM, BS --Schnable & r553
Mu4, Mu5 RM, BS --Talbert & r614
NUCLEAR cDNA, GENOMIC CLONES, AND PROBES
Ant-G1, Ant-G2 (Ant1, Ant2), adenine nucleotide translocator (ADP/ATP carrier, mitochondrial), genomic, RM, BS --Bathgate & r21
Signal recognition protein (SRP), 7SL RNA, BS --Campos & r64
Ubiquitin cDNA, BS --Christensen & r87
Autonomously replicating sequences (ARS), genomic, pMARS26 --Eckdahl & r155
Small nuclear RNA (snRNA) U1, U2, U4, U5, U6 forms --Egeland & r158
Zein-pml1, -A1, -20kDaA20, -27kDaA, -4, -10kDa, -15kDa, -19, -7, glutelin, actin: BS --Elliston & r163
Embryo ABA- and water stress-induced cDNA clone pMA12 (Gomez &, Nature 334:262, 1988) --Gomez & r479
Nitrate reductase (NRase, NADH:NRase) & glyceraldehyde-3-phosphate dehydrogenase (GAPDHase), BS --Gowri & r215
axr1, auxin-binding protein (ABP) cDNA, BS --Hesse & r248; Inohara & r266; Tillmann & r630
Pyruvate decarboxylase (PDC) cDNA, BS --Kelley r297
Zein-10kDa genomic: RM, BS --Kirihara & r307
S14 ribosomal protein, 40S subunit (Cry1, S14-40S, Mch1, Mch2), cDNA: RM, BS --Larkin & r338
Pollen-specific cDNA clones: pZmc13, RM, BS, genomic Zmg13; pZmc58 & Zmg58; Zmc26; pZmc46; pZmc26; pZmc30 --Hanson & r232, Mascarenhas r387 r388 r389 r390
Gpc1, Gpc2, Gpc3, glyceraldehyde-3-phosphate dehydrogenase (GAPDHase), cytosolic, genomic, BS --Martinez & r385; Russell & r530
PEPcase, genomic: RM, BS --Hudspeth & r262; Matsuoka & r395
NADP-malate dehydrogenase (NADP-MDH), chloroplastic, cDNA & genomic, BS --Metzler & r404
Zein-19kDa, genomic, pMS1 & pMS2, BS --Quayle & r499
NADP-dependent malic enzyme (NADP-ME; ME), chloroplastic, cDNA, RM, BS --Rothermel & r525
Chlorophyll binding protein (CAB), Cab*-1, RM, BS --Sullivan & r603
Zein-19kDA: BS --Wandelt & r668
Sod3 cDNA, RM, BS; transit peptide deletion analysis --White & r681
Bacteriophage M13 protein III probe hybridizes (hypervariable minisatellites) to 0.56% of genome --Zimmerman & r713
CHLOROPLAST
atpF, petB, petD, rpl16, psbB, psbH, atpH, atpI, atpA, atpB, atpE, rbcL gene clusters, splicing --Barkan r17
Z. perennis, luxurians, diploperennis, mays subsp., T. pilosum, T. dactyloides: restriction analysis, introgression --Doebley r136
tRNAval, rRNA16S, tRNAile, tRNAala, rRNA23S restriction analysis --Gauly & r199
petE BS --Haley & r229
atpB, rbcL transcription with insertions & deletions --Hanley-Bowdoin & r231
psbA BS --Zaitlin & r707
MITOCHONDRIA
T-urf13 deletion mutations, mapping toxin sensitivity & binding of DCCD protectant --Braun & r42 r43
Z. luxurians 22kDa protein, nucleus-regulated --Cooper & r97
cms-T RM, gene sequence, RM; T-urf13 map location --Fauron & r166 r167
tRNAser, tRNApseudo, nad3, rps12, RM, BS --Gualberto & r221
NCS3, RM and BS alterations --Hunt & r263
atp6, T-urf13 initiation and processing sites, BS --Kennell & r298
2.3kb plasmid BS; chloroplastic tRNApro(CAA) & tRNAtrp(UGG) --Leon & r356
rRNA26S, BS --Maloney & r378
NCS5, NCS6 expressions similar; coxII altered in both; expressions of NCS4 --Newton & r435, 64:52
R2-integrated, BS --O'Brien & r443
hsp60, homolog to groEL (E. coli) & hsp60 (S. cerevisiae, T. thermophila) --Prasad & r489
tRNAglu(UUC), tRNAser(UGA), tRNAtyr(GUA), tRNAlys(UUU), tRNAmet(CAU), BS --Sangare & r539, r540, r541
RU, BS --Small & r577
S-atpA1, S-atpA2, S-atpA3, RM --Wang & r673
RESISTANCE/TOLERANCE/QUANTITATIVE INHERITANCE/QTLs/GERMPLASM
Salt R --Ashraf & r11; Hajibagheri & r225
Maize Rough Dwarf Virus (MRDV) R --Bar-Tsur & r15
Intra- vs. interpopulation synthetics --Becker & r23
Hybrid improvement by interpopulation crosses, F2xF2 vs. BC1xBC1 --Bernardo & r28
Leaf surface wax variations among lines --Blaker & r32
Flowering, pg11 pg12 --Bosch & r38
Flint-dent introgression; N response --Brun & r52 r53
Betaine levels in lines (stress response) --Brunk & r54
Earworm (Heliothis zea Boddie) R vs. silk pH & silk browning --Byrne & r60
Southern leaf blight (Bipolaris maydis (Nisik.) Shoemaker) race O vs. yield --Byrnes & r61
Variety-cross evaluation toward synthetics --Camussi & r65
S2 vs. S2 random-mated counterparts vs. S8 --Carlone & r68
Tropical germplasm accessions: short- vs. long-day evaluations --Castillo-Gonzalez & r70
R to Bipolaris maydis race T (Bmt*), one or two genes --Ceballos & r71
Inhibitor of Ht2 (Iht*) from B14 --Ceballos & r72
Somatic embryogenesis inheritance --Close & r90; Willman & r692
Prolificacy selection vs. fertility & density --Coors & r98
Vegetative phase vs. filling period selection --Corke & r104
Grain-fill in opaque-2 --Cross & r109
Dry-down rate, diallel --Cross & r111
Selection for yield with international testing; gxe --Crossa & r114
Ear and stalk rot (Fusarium moniliforme Sheldon) R selection --DeLeon & r127
Embryo size heterosis --Djisbar & r135
Chlorosis R selection --Dolstra & r138
Nitrate reductase selection vs. N use efficiency --Eichelberger & r159 r160
Drought R selection --Fischer & r182
European Corn Borer (Ostrinia nubilalis Hubner) R selection, DIMBOA correlated --Grombacher & r220
Selection vs. genetic drift & variance --Helms & r246 r247
Southern leaf blight race O, sources of R --Holley & r255
Fusarium moniliforme R sources --Holley & r256
S2 vs. testcross selection --Horner & r257
Heritability vs. selection effectiveness --Johnson r279
Water stress selection --Johnson & r282
Inbreeding in open-pollinated populations --Kahler & r287
Two-spotted spider mite (Tetranychus urticae K.) R in line 41:2504B --Kamali & r289
European Corn Borer R diallel, gca, sca, reciprocal effects --Khalifa & r301
Maize Streak Virus (MSV) R --Kim & r303
Mg in ear leaf --Kovacevic & r323
Methomyl R & male fertility from tissue culture selection, cms-T --Kuehnle & r328
Pollen competitive ability selection --Landi & r335
Drought tolerance, ABA levels; maternal inheritance --Larque-Saavedra & r340
Somaclonal variations, height, maturity, dry matter --Lazanyi r345
RFLPs, diallel, gca, sca; heterotic groups: yield QTLs on 1, 3, 5, 7, 8 --Lee & r351
Organ-specific proteins, 2D: qualitative co-dominant (62 mesocotyl, 54 sheath, 40 blade), qualitative dominant (2 meso, 7 sh), quantitative co-dominant (42 meso, 50 sh, 16 bl), quantitative dominant (5 meso, 6 sh) --Leonardi & r357
Aluminum tolerance selection --Magnavaca & r374
Quality-protein-maize (QPM), normal-appearing o2 kernels; selection --Magnavaca & r375 r376
Favorable-allele donor identification --Misevic r409 r410
Oil selection, diallel --Misevic & r411 r413
Gene flow among maturity groups in populations --Nevado & r434
European Corn Borer R selection --Nyhus & r440
Index selection response; genetic drift --Odhiambo & r445
Conicalness of ear, BSH --Ordas & r447
Stalk rot (Colletotrichum graminicola (Ces.) Wils R diallel --Pereira & r468
Phytic acid in Illinois High Oil & Illinois High Protein selections --Raboy & r501
Double cross prediction --Reddy & r508
Dwarf vs. normal subpopulations --Rocheford & r517
Goss's bacterial wilt (Clavibacter michiganense ssp. nebraskense) R linkage to wx translocations, chromosome 4 --Rocheford & r518
Growth rate correlation with sucrose-P-synthase level --Rocher & r520
Cold-tolerance selection, chlorosis, chlorophyll fluorescence --Schapendonk & r548
Maize dwarf mosaic virus R linked to Y1 --Scott r558
Slow-rusting (Puccinia polysora Underw.) R --Scott r559
Oil percentage selection --Silvela & r571
Autotetraploid single vs. double crosses; vs. isogenic diploids --Sockness & r582 r583
Barrenness under stress, diallel --Sotchenko r585
Multiplicative selection index, full-sib --Stromberg & r597
Nitrate uptake selection --Teyker & r623
Weevil (Sitophilus zeamais Motschulsky) R diallel, gca, sca --Tipping & r632
Pericarp thickness vs. field emergence selection, sh2 --Tracy & r636
Genetic drift vs. selection --Tragesser & r637
Kernel quality, stalk & root lodging R selection --Verderio & r652
Banded leaf and sheath blight (Rhizoctonia solani) R, gca, sca --Vimla & r654
Fall armyworm (Spodoptera frugiperda J.E. Smith) & Southwestern corn borer (Diatraea grandiosella Dyar) R selection, gca, sca --Williams & r690
Earworm (Heliothis zea Boddie) R in PI sources --Wilson & r694
Favorable-allele estimation by diallel, F2, testcrosses --Zanoni & r708 r709 r710
Low-P tolerance, RFLPs: QTLs on 3, 4, 6mid, 6L Reiter & 64:80
--Assembled unrestricted by Prof. Ligate
COORDINATORS' REPORTS
CHROMOSOME 1L
Mapping breakpoints of Reciprocal Translocation Stocks:
wxT1-9(8389) [1L.74,9L.13] : The 1L breakpoint for this commonly used translocation stock maps between bz2 and gs1. Data from 350 testcross progeny produced the following approximate recombination distances in centiMorgans:
bz2 - 4 - T - 8 - gs1 - 30 - bm2
T1-9(8389): The 1L breakpoint for the non-waxy version of this stock mapped to the same position.
T1-4g [1L.95,4L.35]: the 1L breakpoint maps distal to bm2. Data from 142 testcross progeny produced the following approximate distances:
bz2 - 22 - gs1 - 3 - bm2 - 7 - T
Note that recombination is reduced around the translocation breakpoint so that map distances are much less than in the standard map.
wxT1-9(035-10) [1L.89,9S.67]: The version of this stock
which we got from the Maize Coop showed no linkage to bz2, gs1,
or bm2. It may be misidentified as to breakpoint (Earl Patterson,
personal communication).
Paul H. Sisco
CHROMOSOME 6S
McMullen and Louie (Mol. Plant Microbe Interactions 2:309-14, 1989)
have mapped a major gene for resistance to maize dwarf mosaic virus strain
A, Mdm1, to the interval between RFLP markers UMC85 and BNL6.29.
Mead et al. in this volume of the newsletter have determined distances
between the following probes: NPI7-6.3cM-UMC85-11.6cM-BNL7.28-2.1cM-BNL6.29.
Ed Weck
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