Effects of D-Methionine or L-Methionine on Root Hair of Brassica rapa

Hasegawa, N.; Yamaji, Yohei; MINODA, MASASHI; KUBO, MOTOKI

doi:10.1263/jbb.95.419

Cited by 2 publications

(2 citation statements)

References 12 publications

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“…Lim et al 2002) and serves as a pre cur sor for the ACC and then eth yl ene syn the sis Hoffman 1984, Bleeker andKende 2000). Methionine in creases eth yl ene pro duc tion in many plants and en hances the eth yl ene re sponses (Ad ams and Yang 1978, Wang et al 2002, Hasegawa et al 2003 while inhib i tors of ACS (AVG; Rodríguez et al 1991) and ACO (co balt ions; Hogsett et al 1981, Hasegawa et al 2003 in most cases, re duce eth yl ene pro duc tion and limit its ef fect (Child et al 1998). How ever, the AOA, in hib i tor of ACC syn the sis can in ter act with gib ber el lins.…”

Section: Discussionmentioning

confidence: 99%

The effects of methionine and cobalt ions on sex expression and development of Anemia phyllitidis gametophytes

mierczak

2005

Acta Physiol Plant

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One of the prime pre cur sor for eth yl ene syn the sis -L-methionine and the in hib i tor of 1-aminocyclopropane-1-carboxylic acid oxidase (ACO) -Co 2+ -were tested for their ef fects on sex ex pres sion and de vel op ment of Ane mia phyllitidis fern gametophytes. Five con cen tra tions of both chem i cals (0, 10, 25, 50, 100 µM) were ana lysed with ref er ence to antheridia and archegonia for ma tion, num ber and size of cells as well as thalli length us ing the three-zone model of gametophyte struc ture. Both sub stances, how ever at dif fer ent con cen tra tions, enhanced the num ber of GA 3 -in duced antheridia and sim i larly stim u lated the cell num ber and in hib ited thalli length. Both of them at 100 µM con cen tra tions with out GA 3 in duced meristematic area for ma tion while methionine also in duced archegonia in the api cal parts of gametophytes. These find ings cor re spond with the pre vi ous ob ser va tions con cern ing the impor tant role of eth yl ene syn the sis pre cur sor (ACC) in con trolling gibberellic acid-in duced male sex ex pres sion in ferns and broaden the knowl edge about the mech a nisms of fern gametophyte de vel op ment.List of ab bre vi a tions: Me -L-methionine; ACC -1-aminocyclopropane-1-carboxylic acid; ACO − ACC oxidase; ACS -ACC synthetase; AOA − aminooxyacetic acid; CPA -cell pro file area; GA 3 -gibberellic acid In tro duc tionIn de ter mi na tion of male sex in homosporous ferns, gib ber el lins as nat u ral com pounds -antheridiogens (Näf et al. 1975, Yamane 1998 or of ten sub sti tuted by gibberellic acid (Schraudolf 1966, Yamane 1998, Kaźmierczak 2003a) play a cru cial role. They in duce and stim u late antheridia for ma tion (Kaź mier czak 1998(Kaź mier czak , 2003a and in hibit de vel opment of fe male sex (Näf et al. 1975, Yamane 1998. In ab sence of gibberellin antheridia for ma tion induc ing fac tors gametophytes de velop as her maphro ditic or fe male spec i mens which pro duce and secrete the pheromone be com ing in sen si tive to its male-in duc ing ef fects (Näf et al. 1975, Yamane 1998 Re cently it has been re ported that eth yl ene known as the other plant sex hor mone (Metzger 1995) influ ences antheridiogenesis and de vel op ment of game to phytes of A. phyllitidis. It was found that ex oge nous ap pli ca tion of ACC (1-aminocyclo pro pane-1-carboxylic acid), a di rect pre cur sor for eth yl ene syn the sis (McKeon et al. 1995), en hanced GA 3 -induced antheridia for ma tion. This ef fect was connected with stim u la tion of the trans verse ex pan sion of cells in the antheridial zone of gametophytes which was fol lowed by re or gani sa tion of chromatin and in duc tion of nu clear DNA syn the sis (Kaź -447 ACTA PHYSIOLOGIAE PLANTARUM

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Section: Discussionmentioning

confidence: 99%

The effects of methionine and cobalt ions on sex expression and development of Anemia phyllitidis gametophytes

mierczak

2005

Acta Physiol Plant

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“…The ethylene precursor ACC and ethylenereleasing substance 2-chloroethylphosphonic acid (Eth) are involved in breaking seed dormancy (Kol a rov a et al, 2010;Shinohara et al, 2017) and increasing the number and length of root hairs in Brassica species (Hasegawa et al, 2003) and globe artichoke (Shinohara et al, 2017).…”

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Plant Growth Regulator Effects on Germination and Root Traits of ‘Lambada’ and ‘Don Victor’ Onion Cultivars

Macias-Leon¹,

Leskovar²

2017

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Onions (Allium cepa L.) are easily outcompeted by weeds because of slow germination and relative growth rates. Therefore, high percentage of seed germination and root vigor are important traits to improve field performance. The effects of exogenous plant growth regulators (PGRs), 2-chloroethylphosphonic acid (ethephon, Eth), indole-3-acetic acid (IAA), trans-zeatin (tZ), and 1-aminocyclopropane-1-carboxylic acid (ACC) were evaluated on the germination and root growth of ‘Don Victor’ (yellow) and ‘Lambada’ (red) onion seedlings. Seeds were soaked for 10 hours in hormonal solutions and water (hydro-priming). Seed germination improved with Eth (30 and 100 μm), Eth (100 μm) + IAA (10 μm), and IAA (3 μm) treatments. Root surface area (RSA) increased in response to Eth at 30 and 100 μm, Eth + IAA, and 3 μm IAA. Root length (RL) and root diameter (RD) were enhanced by 1 μm tZ and 100 μm ACC. Eth reduced RL and RD, whereas IAA showed no effects. A subsequent experiment evaluated synergistic effects of different PGRs. Treatment of seeds with ACC (250 μm) + tZ (0.5 μm) and ACC (250 μm) + tZ (0.5 μm) + Eth (20 μm) enhanced RL and RD. RSA was unaffected by ACC + tZ + Eth. The results suggest that exogenous PGRs could be useful to enhance germination, RL, and RSA of onion seedlings.

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Effects of D-Methionine or L-Methionine on Root Hair of Brassica rapa

Cited by 2 publications

References 12 publications

The effects of methionine and cobalt ions on sex expression and development of Anemia phyllitidis gametophytes

The effects of methionine and cobalt ions on sex expression and development of Anemia phyllitidis gametophytes

Plant Growth Regulator Effects on Germination and Root Traits of ‘Lambada’ and ‘Don Victor’ Onion Cultivars

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